TY  - BOOK
ED  - National Programme for Environmental Sciences (África do Sul). 
TI  - 1974 annual report of the inland waters section / 
U1  - 574.929 
PY  - 1974///
CY  - Pretoria, South Africa : 
PB  - The Committee, 
KW  - National Programme for Environmental Sciences (South Africa).
KW  - Inland Waters Section
ER  -