TY  - GEN
AU  - Geesink,R.,...[etal]
TI  - Thonner's analytical key to the families of flowering plants
SN  - 9022007308
PY  - 1981///
CY  - Wageningen
PB  - Centre for Agricultural Publishing and Documentation
KW  - Thonner's Analysical Key
KW  - Flowering Plants Families
ER  -