TY  - BOOK
AU  - Umaly, Ruben C.
AU  - Cuvin, Ma. Lourdes A.
TI  - Limnology : a laboratory and field guide physico - chemical factors biological factors
AV  - QH 96.8.B1 .Um1 1988 
PY  - 1988///];copyright 1988
CY  - Manila
PB  - National Book Store
KW  - Limnology -- Aquatic biology
KW  - Limnology -- Labaratory manual
KW  - Limnology -- Water chemistry
ER  -