000			00563nam a2200193Ia 4500
008			161214s9999 xx 000 0 und d
020			_a9788183334587 _c(pbk)
082			_223 _a621.385 _bBPB
100			_aBPB Editorial Board
245		0	_aBuild your own intercoms
260			_aNew Delhi: _bBPB Publications, _c1980
300			_a44 p.; _bill.: _c21 cm.
650			_aElectronic Engineering
650			_aIntercoms
650			_aTechnology
650			_aTelephone -- Design and construction
650			_aTelephone -- Equipment and supplies
942			_2ddc _cBK
999			_c24022 _d24022