TY  - BOOK
AU  - J E VAN DER PLANK
TI  - PLANT DISEASES EPIDEMICS AND CONTROL
U1  - TX632 V283 P 
PY  - 1969///
CY  - LONDON
PB  - ACADEMIC PRESS NEW YORK AND LONDON
KW  - PLANT DISEASES EPIDEMICS AND CONTROL
ER  -