000 00335nam a2200121Ia 4500
008 220216s9999 xx 000 0 und d
100 _aBekema N P
245 0 _aConsumer appraisals of natural rubber
260 _bJournal of the Rubber Research Institute of Malaya
_c1969
300 _a13-Jan
650 _aNatural rubber
942 _cJS
999 _c56218
_d56218