Environmental improvement; air, water, and soil,
Marquis, Ralph William, comp.,
Environmental improvement; air, water, and soil, edited by Ralph W. Marquis. - [Washington] Graduate School, U.S. Dept. of Agriculture [1966] - vii, 105 p. ports. 23 cm.
Text of the lectures presented at the lecture series, Environmental improvement, U.S. Dept. of Agriculture, May 1966.
agr67000144
Pollution.
TD180 / .M3
628
aTD180.A2M3
Environmental improvement; air, water, and soil, edited by Ralph W. Marquis. - [Washington] Graduate School, U.S. Dept. of Agriculture [1966] - vii, 105 p. ports. 23 cm.
Text of the lectures presented at the lecture series, Environmental improvement, U.S. Dept. of Agriculture, May 1966.
agr67000144
Pollution.
TD180 / .M3
628
aTD180.A2M3