TY  - BOOK
AU  - Brandes, J., ed.
AU  - Bartels, R., ed.
AU  - Volk, J., ed.
TI  - Conference on Potato Virus Diseases, 4th Braunschweig, September 12-17, 1960
PY  - 1961///
CY  - Wageningen
PB  - H. Veenman & Zonen
ER  -