000			00330nam a2200145Ia 4500
008			180611s9999||||xx |||||||||||||| ||und||
041			_aen
082			_a531.33
100			_aCOULSON, C A.
245		0	_aWaves
250			_a7th ed
260			_aNew York _bInterscience Publishing, Inc _c1961
300			_axii, 159p.
942			_cLL
999			_c9912 _d9912