00338nam a2200121Ia 4500008004000000082001500040100002300055245004500078250000500123260005000128300001400178650002400192210210b1965   xxu||||| |||| 00| 0 eng d  a631.4 FOSA  aFOSTER (Albert B).  aApproved practices in soil conservation.  a  aCalcutta.bOxford & IBH Publishing Co.,c1965  axviii,384  aSoil Conservation