00332nam a22001097a 4500082002700000100002700027245005800054260004900112300001600161526003700177650000800214  a631.45bBENcL-16, P-3  aHugh Hammond, Bennett   aElements of soil conservation /cBennet Hugh Hammond.  aNew York :bMcGraw Hill Book Company,c1955.  ax, 358 p. :  a0b0c0d631_450000000000000_BEN  aMCE