The equivalence principle according to Mach Bruno BertottiPaul Easthope OriginalPaper Pages: 309 - 318
Differential constants of motion for systems of free gravitating particles. II. General relativity M. EnoshA. Kovetz OriginalPaper Pages: 319 - 346
Evidence for a relativistic electron-pair model of nuclear particles E. J. Sternglass OriginalPaper Pages: 347 - 352
Conformal invariance of Maxwell's equations with magnetic charges E. Kyriakopoulos OriginalPaper Pages: 353 - 358
A theory of generally invariant lagrangians for the metric fields. I Demeter Krupka OriginalPaper Pages: 359 - 368
The triviality of continuous multipliers for the real line Rafael Sorkin OriginalPaper Pages: 369 - 376
A few properties of a certain class of degenerate space-times Jerzy K. KowalczyńskiJerzy F. Plebański Erratum Pages: 387 - 387
Metric and ricci tensors for a certain class of space-times ofD type Jerzy K. KowalczyńskiJerzy F. Plebański Erratum Pages: 388 - 388