00253nam a2200061Ia 4500008004100000245011700041260003300158220204s9999    xx            000 0 und d 0aPapers presented at the rubberwood seminar 12 December 1989, Kottayam (Rubber Board Bulletin. Vol.25 (1-4) 1989)  aKottayambRubber Boardc1989