TY  - BOOK
T1  - Small water purification systems /
DA  - 1981-
CY  - Denver, Colo. :
AU  - Case, Richard B.
VL  - 351
CN  - TD433 .C3
CN  - TD433
PB  - U.S. Dept. of the Interior, Bureau of Land Management:
PB  - Available from Denver Service Center,
PP  - Denver, Colo. :
PY  - 1981-
N1  - Periodic updating anticipated.
ID  - 40447
KW  - Water
KW  - Drinking water
TI  - Small water purification systems /
ER  -