On the relation between geographic races and polyploidy in silene ciliata pourr Kathleen B. Blackburn OriginalPaper Pages: 49 - 66
The inheritance of self-sterility in Petunia Violacea S. C. HarlandO. S. Atteck OriginalPaper Pages: 89 - 102
A contribution to the sterility and irregularities in the meiotic processes caused by virus diseases Dontcho Kostoff OriginalPaper Pages: 103 - 114
On the occurrence of triploid intersexes in hybrids of the lepidopterous genus Oporinia J. W. Heslop Harrison OriginalPaper Pages: 115 - 124