Hausman, Leon Augustus, 1888- Field guide for birds, wild flowers and nature study / by Leon A. Hausman. - New York : Grosset & Dunlap, [c1948]. - ix, 107 p. : il. - Grosset's library of practical handbooks . LCCN: 50006134 Subjects--Topical Terms: HIstória natural--Estados Unidos. Dewey Class. No.: 574.973