Biological control programmes against insects and weeds in Canada, 1959-1969/
Kelleher, J.S., ed.
Biological control programmes against insects and weeds in Canada, 1959-1969/ - Slough CAB 1981 - x,401p.
Hulme, M.A., jt. ed.
Edited by J.S.Kelleher and M.A.Hulme.
632.937.12(71) 1969/1980 M1
Biological control programmes against insects and weeds in Canada, 1959-1969/ - Slough CAB 1981 - x,401p.
Hulme, M.A., jt. ed.
Edited by J.S.Kelleher and M.A.Hulme.
632.937.12(71) 1969/1980 M1