22. Richard, M. Harbeck - Loyd, and K Johnson, Physical Science, Holt Rincbart and Winston,
Inc., New York, 1965.
Clarence E. Bennett, Physics without Mathematics, Bames & Noble books, Inc., U.S.A., 1970.
F3lUl~fhlW& QlfJ&l bl%XlU&, Modern PhysicsTest, dh$.KaPd~l8~ dllhihw"
3pxklGm,n~s~nwunlPana.
368 SC 102