TY - BOOK AU - Gettys,W.Edward; Keller,Frederick J TI - Physics:classical & modern AV - E18.85; E20; G128 .D4 1991; .D42 1991 SUPP. C1-C2-10; .H64; .U52 1974 PY - 1989///.0 CY - New York PB - McGraw-Hill KW - Physics KW - Physics - waves - oscillations KW - Physics part 1 KW - Physics-wavas-oscillations ER -