Author: Macan, T T & Jean C Mackereth.
Title: Notes on Gammarus Pulex in the English Lake District. [Separatum Vol IX, 25.2.1957. No 1].
Description: Uitgeverij Dr W Junk, Den Haag, 1957. 12 pp, text tables. Original printed paper wraps, stapled. 24 cm x 16 cm. Small ink stamp to lower section of front wrap, faint marginal age browning to contents.

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