000			00488nam a2200145Ia 4500
008			220216s9999 xx 000 0 und d
100			_aRuiyan H
245		0	_aPreliminary studies on cold resistance of rubber trees determined by electric conductometer
260			_bProceedings of the IRRDB Symposium: Rubber Physiology and Exploitation, China, 1986; p98-105
650			_aCold resistance
650			_aElectric conductometer
650			_aHevea
700			_aZhenfei C
942			_cJS
999			_c65515 _d65515