Water pollution :
Goel, P. K.
Water pollution : causes, effects and control / P. K. Goel. - 2nd ed. - New Delhi : New Age International, 2006. - p ; cm.
9788122418392
Water quality--India.
Water--Pollution.
TD420 / .G59
Water pollution : causes, effects and control / P. K. Goel. - 2nd ed. - New Delhi : New Age International, 2006. - p ; cm.
9788122418392
Water quality--India.
Water--Pollution.
TD420 / .G59