Extracting and cleaning forest tree seed
By: Comp. by the Branch of silviculture
Series: Circular / U.S. Department of Agriculture, Forest Service -- 208; Circular (United States. Forest Service) -- 208.
Publisher: Govt. Print. Off.
Published: 1912
Place of publication: Washington
Language: eng
Number of pages: 23
Subjects: Conifers; Seeds; Drying