Elements of environmental engineering /
Duggal, K N
Elements of environmental engineering / Duggal, K N - 5 ed. - S. Chand & Company, New Delhi, 1998 - p. ; 22 cm.
Sanitary and municipal engineering, Environmental protection engineering
628 DUG-E5
Elements of environmental engineering / Duggal, K N - 5 ed. - S. Chand & Company, New Delhi, 1998 - p. ; 22 cm.
Sanitary and municipal engineering, Environmental protection engineering
628 DUG-E5
