000			00352nam a22001337a 4500
008			160505b xsy||||| |||| 00| 0 eng d
082			_a535
100	1		_aAllen, L. _934819
245	1		_aEssentials of lasers\ _cL. Allen.
260			_aLondon: _bGreat britain, _c1969AD.
300			_a233P. : _bill; _c20cm.
650			_aLight. _954734
942			_2ddc _cBK
999			_c308683 _d308683