00480nam a2200169Ia 4500008004100000082002000041100001700061245005200078260003900130650002100169650001800190650002600208650002100234650002000255650002300275650001200298220204s9999    xx            000 0 und d  aNR:63:58bDIJ;4  aDijkman, M J 0aHevea: Thirty years of research in the far east  aFloridabUniv of Miami Pressc1951  aClonal selection  aHevea history  aMother tree selection  aplanting density  aRubber diseases  aRubber fertilizers  aTapping