TY  - BOOK
AU  - Dressler,Robert L.
TI  - The orchids: natural history and clasification 
SN  - 0674875257
U1  - 584.15 
PY  - 1982///
CY  - Cambridge, MA
PB  - Harvard University Press, 
KW  - BOTANICA
KW  - CLASIFICACION
ER  -