TY  - BOOK
AU  - " Cherrett, J. M."
TI  - "Origins of pest, parasite, disease and weed problems"
U1  - 632.7 / .51:633 L7 
PB  - "Oxford : Blackwell scientific publications, 1977"
KW  - " Sagar, G. R."
KW  - "Diseases, pest and weeds"
ER  -