000 00228 a2200097 4500
001 7602
100 _aCrowther, J G
245 _aDiscoveries and Inventions of the 20th century
260 _a
_bRoutledge
_c
090 _c6084
_d6084
942 _aNUST-CAE
_cM
_c32583
999 _c242675
_d242675