
COULTER, JOHN M.; ROSE, J. N.

KOVALEV, N.: PEOPLE'S COMMISSARIAT OF AGRICULTURE

MASSALAB, N. A.; YUGANOVA, O. N.; PEOPLE'S COMMISSARIAT OF AGRICULTURE


UNITED STATES SENATE, SUBCOMMITTEE ON THE JUDICIARY

UNIVERSITY MUSEUM, UNIVERSITY OF PENNSYLVANIA

MERRIAM, DR. C. HART: U. S. DEPARTMENT OF AGRICULTURE

STOOKEY, S. DONALD; SMITHSONIAN INSTITUTION

POHL, ERWIN R.; SMITHSONIAN INSTITUTION

ROEDER, KENNETH D.; TREAT, ASHER E.; SMITHSONIAN INSTITUTION

JOHNSTON, EARL S.; SMITHSONIAN INSTITUTION

MOURANT, A. E.; SMITHSONIAN INSTITUTION

RUSSELL, ISRAEL C.


ANTIQUARIAN BOOKSELLERS' ASSOCIATION






TOBEY, MARK; SEATTLE ART MUSEUM

MAXIM, HUDSON; illustrations by OBERHARDT, WILLIAM

BURNS, VINCENT GODFREY

ARNOLD, RALPH; ANDERSON, ROBERT; ALLEN, IRVING C.

BRYAN, KIRK; U. S. GEOLOGICAL SURVEY
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