Letter (Astounding Science-Fiction, March 1939): Maybe They, Like Lobsters, Had Haemocyanin Blood?

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Overview:

Title: Letter (Astounding Science-Fiction, March 1939): Maybe They, Like Lobsters, Had Haemocyanin Blood?
Author: Hewitt D. Hackmann
Year: 1939
Type: Essays

Editions/Publications:

Unknown. Astounding Science-Fiction, March 1939 (Unknown, Hewitt D. Hackmann, Street & Smith Publications, Inc., $0.20, 164 pages, pulp, MAGAZINE)

This text has been adapted from the Letter (Astounding Science-Fiction, March 1939): Maybe They, Like Lobsters, Had Haemocyanin Blood? entry at the Internet Speculative Fiction Database and is available under a Creative Commons License. The ISFDB does not endorse or sponsor this use.