000			00363nam a2200145Ia 4500
008			230312s9999||||xx |||||||||||||| ||und||
020			_a0-471-04292-7
082			_a621.381 _bHEL-P
100			_aHelszajn
245		0	_aPassive and active microwave circuits
260			_bJohn wiley _aUSA _c1978
300			_a274
650			_aEngineering _vAvionics
942			_cBK
999			_c12455 _d12455