Author: Duyvené de Wit, J.
Title: Onderzoekingen over de sexueel-endocrine organisatie van Rhodeus amarus
Description: en de beteekenis van de legbuistest voor de endocrinologie in het algemeen. [with some letters by the author] Amsterdam 1939. XVI, 269p., 3 ll., 1 double plate, 2 folding tabs., numerous illustrations. Orig. wrs. (spine loose) - Thesis. = Interesting thesis of the sexuality of these fishes. Many pencil notes in the text and several letters from the author to Dr. Ingvar Kristensen and notes by Kristensen himself.

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