00271nam a2200109Ia 450000500170000008000180001710000220003524500330005726000400009030000130013058300180014320260716043632.0  a07.04.01 C456  aChang, Cheu-Shang  aMechanization of small farms  bUniv. of Guyanaa[Turkeyen]GYc1975  a9 leaves  c12/1/05kJOYD