00866cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001800092040004300110042001200153050001500165070001600180082000800196100004300204245008300247260006900330300003200399500012200431650001500553710002700568999001700595agr67000144 DLC20260227111026.0711119s1966    dcuc          000 0 eng c  aagr67000144   a(OCoLC)173252  aU.S. Nat'l Agr. Libr.cOAUdOCoLCdDLC  apremarc00aTD180b.M30 aaTD180.A2M3  a6281 aMarquis, Ralph William,ccomp.,ecomp.10aEnvironmental improvement;bair, water, and soil,cedited by Ralph W. Marquis.  a[Washington]bGraduate School, U.S. Dept. of Agriculturec[1966]  avii, 105 p.bports.c23 cm.  aText of the lectures presented at the lecture series, Environmental improvement, U.S. Dept. of Agriculture, May 1966. 0aPollution.2 aGraduate School, USDA.  c12195d12195