Editore: Cornell Extension Service, Ithaca, NY, 1951
Da: Willis Monie-Books, ABAA, Cooperstown, NY, U.S.A.
Softcover. Condizione: Very Good. 24 pages; Cornell Extension Bulletin 747.
Editore: Cornell Extension Service, Ithaca, NY, 1955
Da: Willis Monie-Books, ABAA, Cooperstown, NY, U.S.A.
Softcover. Condizione: Very Good. 16 pages; Cornell Extension Bulletin 940.
Editore: Michigan State University, East lansing, 1970
Da: Bolerium Books Inc., San Francisco, CA, U.S.A.
66p.,8.5x11 inches, introduction, summary, appendixes, bibliography, tables, very good in original green stapled wraps. Institute of International Agriculture College of Agriculture and Natural Resources, Research Report No. 9.