000			00315nam a2200133Ia 4500
008			220216s9999 xx 000 0 und d
100			_aCake W E
245		0	_aNatural rubber at the cross-roads
260			_bPlanter _c1954
300			_a381-384
650			_aCross-roads
650			_aNatural rubber
942			_cJS
999			_c63488 _d63488