Biological control programmes against insects and weeds in Canada, 1959-1968
Biological control programmes against insects and weeds in Canada, 1959-1968
[By the Canadian Dept. of Agriculture and Dept. of Fisheries and Forestry]
- Slough Commonwealth Agricultural Bureaux 1971
- x, 266 p. maps 26 cm.
- Technical communication no. 4 .
- Commonwealth Institute of Biological Control Technical communication no. 4 .
Weeds--Biological control--Canada
Insect pests--Control--Biological control--Canada
632 / .96 / 08 s
Weeds--Biological control--Canada
Insect pests--Control--Biological control--Canada
632 / .96 / 08 s