Scientific and Technical Societies of the United States and Canada

by

Scientific and Technical Societies of the United States and Canada - National Academy Of Sciences

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ...subsemicircular; several hairs on the strictly anterior margin, two rather long hairs on the lateral margin of the front, and two long hairs ... Read More

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