Bagnold, Ralph Alger, 1896. The physics of blown sand and desert dunes / Ralpg A. Bagnold. - London : Metheun, 1954. - 265 p. : ill. ; 22 cm. Includes bibliographical references. Subjects--Topical Terms: Sand dunes--------Winds.--------Ripple-marks.-------- Dewey Class. No.: 551.37