000 00231 a2200109 4500
082 _a621.3808
_bN213
245 1 _aTECHNICAL SESSION PROCEEDINGS
260 _a
_b
_c1964-
300 _av.
964 _gCIRC
997 _a70497 v. 6 s C
999 _c456244
_d456244