Duggal, K. N.
Elements of public health engineering by K. N. Duggal - 4th ed. - New Delhi S. Chand 1971 - 488 p. ill. 20 cm.
Includes bibliographies
Public health engineering
628 / DUG/1971
Elements of public health engineering by K. N. Duggal - 4th ed. - New Delhi S. Chand 1971 - 488 p. ill. 20 cm.
Includes bibliographies
Public health engineering
628 / DUG/1971