Gettys, W. Edward; Keller, Frederick J creator text New York McGraw-Hill 1989.0 INTERNAT monographic Physics Physics - waves - oscillations Physics part 1 Physics-wavas-oscillations E18.85; E20; G128 .D4 1991; .D42 1991 SUPP. C1-C2-10; .H64; .U52 1974 250902 20250902025411.0 000083501