Rubber (Hevea) diseases
U.S.D.A.
Rubber (Hevea) diseases - Washington 1926 - 1-129 p. - Diseases United States Department of Agriculture. Department Bulletin No. 1380 .
Rubber (Hevea) diseases - Washington 1926 - 1-129 p. - Diseases United States Department of Agriculture. Department Bulletin No. 1380 .