How to make improvement thinnings in Massachusetts woodlands - Cook, Harold O. (Harold Oatman) (Boston : Wright & Potter Printing Co., State printers, 1910)
"In 1905 the Massachusetts State Forester published a small pamphlet on "Improvement Thinnings." The edition of this pamphlet has ... been exhausted."--Introd.
A third edition was published in 1914 under title: Instructions for making improvment thinnings and the management of moth-infested woodlands.
Also available in digital form on the Internet Archive Web site.
Keywords: Forests and forestry -- Massachusetts