1. On semisimple bands

   • B. M. Schein

   Research Article 01 December 1978 Pages: 1 - 12

2. Extension theories for monoids

   • Charles Wells

   Research Article 01 December 1978 Pages: 13 - 35

3. Inverse semigroup varieties with the amalgamation property

   • T. E. Hall

   Research Article 01 December 1978 Pages: 37 - 51

4. A class of uniform bands

   • Janet E. Mills

   Research Article 01 December 1978 Pages: 53 - 66

5. Relations between cross-connections and biordered sets

   • K. S. S. Nambooripad

   Research Article 01 December 1978 Pages: 67 - 81

6. The tensor product of semilattices

   • James A. Anderson
   • Naoki Kimura

   Research Article 01 December 1978 Pages: 83 - 88

7. Convergence rates of ergodic limits for semigroups and cosine functions

   • Jerome A. Goldstein
   • Charles Radin
   • R. E. Showalter

   Research Article 01 December 1978 Pages: 89 - 95

8. On left, right and two-sided cancellable elements of semigroups

   • H. J. Weinert

   Research Article 01 December 1978 Pages: 97 - 103

9. Tensor product of commutative unions of groups

   • James A. Anderson
   • Naoki Kimura

   Research Announcement 01 December 1978 Pages: 105 - 107

10. Bibliographical items

    Legacy 01 December 1978 Pages: 109 - 110

11. Extensions de demi-groupes inverses

    • Denis Allouch

    Research Article 01 December 1978 Pages: 111 - 116

12. On the classes of orderable semigroups in varieties

    • U. K. Kuspanov

    Research Article 01 December 1978 Pages: 117 - 131

13. On Conrad's partial order relation on semiprime rings and on semigroups

    • W. D. Burgess
    • R. Raphael

    Research Article 01 December 1978 Pages: 133 - 140

14. The core congruence on a monoid

    • William R. Nico

    Research Article 01 December 1978 Pages: 141 - 146

15. Abian's order relation for semigroups

    • C. S. Johnson Jr.
    • F. R. McMorris

    Research Article 01 December 1978 Pages: 147 - 151

16. Tensor product of commutative semigroups

    • James A. Anderson

    Research Article 01 December 1978 Pages: 153 - 164

17. Green's ∂-relation for polynomials

    • K. D. Magill Jr.

    Research Article 01 December 1978 Pages: 165 - 182

18. Remarks on 0-minimal quasi-ideals in semigroups

    • A. H. Clifford

    Research Article 01 December 1978 Pages: 183 - 196

19. Quotients of compact 0-dimensional semigroups and groupoids

    • August Lau

    Research Announcements 01 December 1978 Pages: 197 - 198

20. Corrigendum to: A note on my paper “Notes on compact semigroups with identity”

    • Wolfgang Ruppert

    Corrigendum 01 December 1978 Pages: 199 - 200

21. On groups in varieties of semigroups

    • K. H. Kim
    • F. W. Roush

    Short Notes 01 December 1978 Pages: 201 - 202

22. Orders of subsemigroups of T_n

    • K. H. Kim
    • F. W. Roush

    Short Notes 01 December 1978 Pages: 203 - 203

23. A conference on: The algebraic theory of semigroups

    Announcements 01 December 1978 Pages: 204 - 204

24. Radicals of semigroups

    • E. N. Roîz
    • B. Y. Schein

    Survey Article 01 December 1978 Pages: 299 - 344

25. The inverse hull of the free semigroup on a set X

    • Nathaniel Knox

    Research Article 01 December 1978 Pages: 345 - 354

26. Some results on generalized inverse semigroups

    • S. Madhavan

    Research Article 01 December 1978 Pages: 355 - 367

27. Regular * semigroups

    • T. E. Nordahl
    • H. E. Scheiblich

    Research Article 01 December 1978 Pages: 369 - 377

28. Lectures in semigroups

    • M. Petrich
    • A. H. Clifford

    Book Review 01 December 1978 Pages: 379 - 383

29. Roots of doubly-infinite increasing sequences

    • M. L. Howard

    Short Note 01 December 1978 Pages: 385 - 386

30. Treillis Continus Et Treillis Completement Distributifs

    • M. Kamara

    Short Note 01 December 1978 Pages: 387 - 388

31. A note on homomorphisms of a free monoid

    • C. M. Reis

    Short Note 01 December 1978 Pages: 389 - 391

32. Conference announcement

    Announcement 01 December 1978 Pages: 392 - 392

33. On right congruences of semigroups

    • Robert H. Oehmke

    Research Article 01 December 1978 Pages: 393 - 401

34. Connected cm-homomorphisms into semigroups of closed binary relations on hereditarily locally connected continua

    • David I. Adu

    Research Article 01 December 1978 Pages: 403 - 425

35. Finite comhutative semigroups having Frobenius semigroup algebras

    • Ronald H. Wenger

    Research Article 01 December 1978 Pages: 427 - 442

36. On groups of units in a special class of monoids

    • Marie Demlová

    Research Article 01 December 1978 Pages: 443 - 454

37. Homogeneous quotients of semigroups

    • Kevin E. Osondu

    Research Article 01 December 1978 Pages: 455 - 462

38. Le Langage Des Schemas Pour Les Demi-Groupes Commutatifs

    • A. Batbedat

    Research Announcement 01 December 1978 Pages: 463 - 471

39. Des Schemas En Demi-Groupes Commutatifs

    • A. Batbedat

    Research Announcement 01 December 1978 Pages: 473 - 481