Rocky mountain trees; a handbook of the native species with plates and distribution maps,

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1940

North American trees (exclusive of Mexico and tropical United States) A handbook designed for field use, with plates and distribution maps

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1948

Rocky mountain trees; a handbook of the native species with plates and distribution maps

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1947

North American trees (exclusive of Mexico and tropical United States) A handbook designed for field use,

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1961

Rocky Mountain trees; a handbook of the native species with plates & distribution maps,

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1968

North American trees (exclusive of Mexico and tropical United States) : a handbook designed for field use, with plates and distribution maps /

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1976

North American trees /

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J, (Richard Joseph), 1905-2001
Published 2002

North American trees : exclusive of Mexico and tropical Florida /

by Preston, Richard J (Richard Joseph), 1905-2001, Preston, Richard J (Richard Joseph), 1905-2001
Published 1989

The growth and development of the root systems of juvenile lodgepole pine /

by Preston, Richard J (Richard Joseph), 1905-2001
Published 1942

North American trees (exclusive of Mexico and tropical Florida) : a handbook designed for field use, with plates and distribution maps /

by Preston, Richard J (Richard Joseph), 1905-2001
Published 1976

Identification of southeastern trees in winter /

by Preston, Richard J (Richard Joseph), 1905-2001
Published 1988

North American trees (exclusive of Mexico and tropical United States); a handbook designed for field use, with plates and distribution maps

by Preston, Richard J (Richard Joseph), 1905-2001
Published 1966

North American trees (exclusive of Mexico and tropical United States) : a handbook designed for field use, with plates and distribution maps /

by Preston, Richard J (Richard Joseph), 1905-2001
Published 1976

North American trees (exclusive of Mexico and tropical United States); a handbook designed for field use, with plates and distribution maps

by Preston, Richard J (Richard Joseph), 1905-2001
Published 1961