000			00339pam a2200133a 44500
082			_aBTS _bMONO 2507
100			_aAtalla,M M
245	1		_aARCING OF ELECTRICAL CONTACTS IN TELEPHONE SWITCHING CIRCUITS
260			_a _b _c1955
300			_a91
500			_aBound With Bts Mono 2501-06,2508-20
964			_gCIRC
997			_aTR18537 C
999			_c402452 _d402452