00292nam a2200097Ia 4500008004100000100001400041245008700055260001800142300001100160500002300171220216s9999    xx            000 0 und d  aWasuwat S 0aRubber wood one of the natural resources which should be utilized more efficiently  bKaikornc1979  a99-105  aAGRIS CD 1975-1980