TY  - BOOK
AU  - Stakman,E.C.
AU  - Harrar,J.George
TI  - Principles of plant pathology
AV  - SB731 .S77
U1  - 632 
PY  - 1957///]
CY  - New York
PB  - Ronald Press Co.
KW  - Plant diseases
N1  - Includes bibliographies
ER  -