TY  - BOOK
AU  - Jorgensen, S. E., 
AU  - Vollenweider, R. A., 
TI  - Guidelines of lake management. Vol.1 : : Principles of Lake management
PY  - 0000///s.f
CY  - s.l. : 
PB  - International Lake Environment Committee, 
KW  - LAGOS
ER  -