Canadian Plant Disease Survey. v.56, 1976
Seaman, W.L., ed.
Canadian Plant Disease Survey. v.56, 1976 edited by W.L. Seaman - Ontario Agriculture Canada 1976 - v.56, 132 p.; 26cm.
0008476X
Canadian Plant Disease Survey. v.56, 1976 edited by W.L. Seaman - Ontario Agriculture Canada 1976 - v.56, 132 p.; 26cm.
0008476X