Geographic variation of eastern white pine in the Northeast / [Peter W. Garrett, Ernst J. Schreiner, Harry Kettlewood]

by Garrett, Peter W., 1933-
Upper Darby, Pa. : Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1973.

Series: Research paper (Northeastern Forest Experiment Station) ; NE-274

Ray tissues as an indirect measure of relative sap-sugar concentration in sugar maple / Peter W. Garrett, Kenneth R. Dudzik.

by Garrett, Peter W., 1933-
Broomall, PA : U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, c[1989].

Series: Research paper (Northeastern Forest Experiment Station) ; NE-626

Sugar maple seed production in northern New Hampshire / Peter W. Garrett, Raymond E. Graber

by Garrett, Peter W., 1933-
Radnor, PA (5 Radnor Corp CTR STE 200, PO Box 6775, Radnor 19087-8775) : U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, [1995].

Series: Research paper (Northeastern Forest Experiment Station) ; NE-697

Species hybridization in the genus Pinus / by Peter W. Garrett.

by Garrett, Peter W., 1933-
Broomall, Pa. : Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1979.

Series: Research paper (Northeastern Forest Experiment Station) ; NE-436