Wallis, Earl L. Isometric exercises for figure improvement and body conditioning [electronic resource] / [by] Earl L. Wallis and Gene A. Logan.. — Englewood Cliffs, N.J., : Prentice-Hall, [c1964]. — 1 v. : illus. 28 cm. Subjects--Topical Terms: Exercise.Isometric exercise.Physical fitness.Gymnastiek. LC Class. No.: RA781 / .W32 Dewey Class. No.: 613/.71 796.41