000			00360nam a2200145 a 4500
005			20240602103942.0
008			040407s19uu xx 00 eng d
100			_aDitchburn, R. W.
245			_aLight / _cby R.W. Ditchburn.
250			_a2nd ed.
260			_aLondon : _bBlackie, _cc1963.
300			_axxvi, 833 p. : ill.
650			_aLight.
942			_2ddc
999			_c83359 _d83359