000 00291nam a22000977a 4500
008 230731b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aPRT polymer age
260 _aEngland:
_bRubber & Technical Press Ltd.,
942 _2udc
_cCR
999 _c56434
_d56434