000 00369nam a2200109Ia 4500
008 220214s9999 xx 000 0 und d
100 _aBlow CM
245 0 _aPositex pamphlet-The Estimation of small percentages of rubber in fibrous materials
260 _bPositex Pamphlet No.7, published by British Rubber Development Board, London
_c1947
300 _a4p
942 _cRE
999 _c46182
_d46182