00685nam a22002171 4500 sa 62000659 DLC 20260227111915.0 850227s1962 ii a 00010 eng sa 62000659 /L/r85 PL480:I-E-291 DLC/ICU ICU QC225 .K45 1962 Khanna, D. R. (Daulat Ram), 1906- A textbook of sound for B.A. & B. Sc. (pass & hons.) students of Indian universities, by D.R. Khanna and R.S. Bedi. New 7th ed., greatly improved. Delhi, Atma Ram, 1962. 380 p. illus. 22 cm. Sound. Bedi, R. S., joint author. 53003 53003