000 00315nam a2200133 a 4500
005 20140414132056.0
008 100520s19uu xx 00 eng d
050 _aREF 609
_bI59 1993
245 _aInventions and discoveries 1993.
440 _a
650 _aInventions
650 _aInventors
999 _c114306
_d114306