TY  - BOOK
AU  - Golterman H L Ed.
AU  -  Clymo R S Ed.
TI  - Methods for chemical analysis of fresh waters
T2  - International biological programme handbook; 8
U1  - G9557:(E:3), K9 
PY  - 1969///
CY  - Oxford
PB  - Blackwell         
KW  -  Fresh water
KW  - Biology
ER  -