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A Punched Card System for Filing Parasitological Bibliography Cards

$125.00

Calendar of Meetings of Biological Societies

$125.00

The Production of Males and Females Controlled by Food Conditions in Hydatina Senta

$125.00

Coelatura Conrad, 1853, Caelatura Conrad, 1865 and Coelatura Pfeiffer, 1877 (Mollusca): A Tale of Two Diphthongs

$125.00

Chromosomenstudien an Mischlingen I. Die Chromosomenkonjugation bei der Gametogenese von Smerinthus populi var. austauti x populi. Ein Beitrag zur Frage der Chromosomen-individualitat und der Gametenreinheit

$125.00

The Last Known Population of the Freshwater Mussel Margaritifera auricularia (Bivalvia, Unionoida): A Conservation Priority

$35.00

Freshwater and Terrestrial Mollusks

$45.00

Phylogenetics and Biogeography

$45.00