000 003140000a22001330004500
008 160411b1943 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a926.08
_bM3
942 _cBK
100 _aMcNicol, Harry
245 _aSeven Inventors
260 _aLondon
_bOxford University Press
_c1943
300 _a91: ill.
999 _c7271
_d7271