000 00343nam a2200121Ia 4500
008 220217s9999 xx 000 0 und d
245 0 _aFormulae for evaluation of natural rubber
260 _aNew Delhi
260 _c1974
_bBureau of Indian stamdards
500 _aStandard number: IS 7499
650 _aNatural rubber evaluation
942 _cST
999 _c73929
_d73929