00361nam a2200133Ia 4500 130903s9999 xx 000 0 und d 633.91:338.004 K2 Rubber; botany, production and utilization. London Leonard Hill (Books) 1962 xvii,449p. Polhamus, Loren G. Rubber GRBK 0 0 0 0 KSD KSD 2013-09-03 0 633.91:338.004 K2 G2695 2013-09-03 00:00:00 2013-09-03 GRBK 83056 83056