000			00299nam a2200133Ia 4500
008			180612s9999||||xx |||||||||||||| ||und||
041			_aen
082			_a503
100			_aKOGAN Philip
245		4	_aThe Unseen Spectrum
260			_aLondon _bGinn and Company _c1966
300			_a112p
942			_cPR
999			_c48354 _d48354