Proc. of the 1979 British Crop Protection Conf. Pests & diseases - Vol.1
British Crop Protection Council
Proc. of the 1979 British Crop Protection Conf. Pests & diseases - Vol.1 - Worcester BCPC 1979 - 302
R632.9 / C53P
Proc. of the 1979 British Crop Protection Conf. Pests & diseases - Vol.1 - Worcester BCPC 1979 - 302
R632.9 / C53P