TY  - GEN
AU  - Lawrence, T.
AU  - Sloten, D.H. van
AU  - Toll, J.
TI  - Directory of germplasm collections, 2 : root and tuber crops
U1  - 635.21 
PY  - 1986///
CY  - Rome
PB  - IBPGR
KW  - COLLECTIONS DIRECTORIES GERMPLASM IBPGR POTATOES ROOT CROPS TUBER
ER  -