TY  - BOOK
AU  - Margalef,Ramon
TI  - Limnology now: a paradigm of planetary problems 
SN  - 0444898263
PY  - 1994///
CY  - Amsterdam
PB  - Elsevier North-Holland
KW  - Limnology
KW  - Freshwater ecology
KW  - Man
KW  - influence on nature
ER  -