000 002770000a22001330004500
245 _aSeals
100 _aFern, A.G.
100 _aNav, B.S.
260 _bOUP
_c1976
440 _aEngineering design guides ; 15
080 _a621-762
_bF4
041 _aEN
942 _cBK
999 _c113359
_d113359