Biodiversity Heritage Library
By "Willits, C. O. (Charles Oliver), 1901-"
Maple sirup producers manual / by C. O. Willits and Claude H. Hills.
By: Willits, C. O. (Charles Oliver), - Hills, Claude Hibbard,
Edition: Slightly rev.
Publication info: Washington :Agricultural Research Service, U.S. Dept. of Agriculture : for sale by the Supt. of Docs., U.S. Govt. Print. Off.,1976.
Contributed by: Prelinger Library (archive.org)