TY  - BOOK
AU  - Bos,L.
TI  - Symptoms of virus diseases in plants: with indexes of names of symptoms in English, Dutch, German, French, Italian, and Spanish 
SN  - 9022006581
PY  - 1978///
CY  - Wageningen
PB  - Center for Agricultural Publishing and Documentation
N1  - Includes bibliographies and indexes
ER  -