TY  - BOOK
AU  - Cook,Christopher D.K.
TI  - Water plants of the world: a manual for the identification of the genera of freshwater macrophytes 
SN  - 9061930243
PY  - 1974///
CY  - The Hague
PB  - W. Junk
KW  - Freshwater flora
KW  - Identification
ER  -