Ontario weeds
By: [F.H. Montgomery and C.M. Switzer].
Contributors: Switzer, C. M., 1929-
Series: Publication / Ontario -- 505; Publication (Ontario. Dept. of Agriculture) -- 505
Publisher: Dept. of Agriculture and Food
Published: 1966
Place of publication: Toronto, Ontario
Language: eng
Number of pages: 141
Subjects: Weeds -- Ontario
Notes: Cover title.