TY  - BOOK
AU  - Willan, R.L.
ED  - DANIDA Forest Seed Centre.
TI  - Phytosanitary problems in seed procurement
U1  - 631.5 
PY  - 1991///
CY  - Copenhagen
PB  - Danida Forest Seed Centre
KW  - Seed industry and trade
N1  - Includes bibliographical references (p. 12-5)
ER  -