Establishing even-age northern hardwood regeneration by the shelterwood method: a preliminary guide / Richard M. Godman and Carl H. Tubbs.

by Godman, Richard M.
[Saint Paul, Minn.] : North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, [1973].

Series: Research paper (North Central Experiment Station) : NC-99

Silvical characteristics of Sugar maple (acer saccharum) / R. M. Godman

by Godman, Richard M
[St. Paul, Minn.] : Lake States Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1957.

Series: Station paper (Lake States Forest Experiment Station) ; 50