01244cam a22003491a 4500001001300000003000400013005001700017008004100034010001700075035002000092040002600112042001200138050001400150070002000164072000900184072000900193100004200202245009800244260005800342300003500400490008300435500005600518500001700574650003200591650002800623650005000651700002000701700004700721740002400768830008500792999001700877agr48000040 DLC20260227111008.0831107s1947    dcuab    s   f000 0 eng    aagr48000040   a(OCoLC)10104177  aDLCcIMolDdDNALdDLC  apremarc00aS751b.C60 a1bAg84M no.630 0aN200 0aE1001 aCooper, M. R.q(Martin Reese),d1887-10aProgress of farm mechanization /cby Martin R. Cooper, Glen T. Barton, and Albert P. Brodell.  aWashington, D.C. :bU.S. Dept. of Agriculture,c1947.  a101 p. :bill., maps ;c23 cm.1 aMiscellaneous publication / United States Department of Agriculture ;vno. 630  aContribution from Bureau of Agricultural Economics.  aCover title. 0aAgriculturezUnited States. 0aAgricultural machinery. 0aAgriculturexEconomic aspectszUnited States.1 aBarton, Glen T.1 aBrodell, Albert P.q(Albert Perry),d1895-0 aFarm mechanization. 0aMiscellaneous publication (United States. Department of Agriculture) ;vno. 630.  c10760d10760