Proc. of the 1979 British Crop Protection Conf. Pests & diseases - Vol.3
British Crop Protection Council
Proc. of the 1979 British Crop Protection Conf. Pests & diseases - Vol.3 - Worcester BCPC 1979 - 603-891
R632.9 / C53P
Proc. of the 1979 British Crop Protection Conf. Pests & diseases - Vol.3 - Worcester BCPC 1979 - 603-891
R632.9 / C53P