1. Freshwater Diatomflora of the Panhalgarh Hillfort in the Kolhapur district

   • H. P. Gandhi

   OriginalPaper 01 December 1959 Pages: 93 - 129

2. Notes on the Diatomaceae from Ahmedabad and its environs — II

   • H. P. Gandhi

   OriginalPaper 01 December 1959 Pages: 130 - 146

3. A quantitative study of the summer phytoplankton in four Central North Carolina ponds

   • Ronald C. Phillips
   • L. A. Whitford

   OriginalPaper 01 December 1959 Pages: 147 - 154

4. Contribution à la biologie de quelques Cichlides. III.

   • J. T. Spaas

   OriginalPaper 01 December 1959 Pages: 155 - 176

5. Zoogeographical review of the Black Sea Fish Fauna

   • E. P. Slastenenko

   OriginalPaper 01 December 1959 Pages: 177 - 188

6. Description of a community of microorganisms in purified sewage mixed with rain waterfrom storm-sewers

   OriginalPaper 01 December 1959 Pages: 189 - 204