TY - BOOK AU - La Porte,William Ralph AU - Renner,Al G. TI - The tumbler's manual T2 - Prentice-Hall books on health and sports U1 - 796.47 PY - 1938/// [printing 1960] CY - New York PB - Prentice-Hall, inc. KW - Tumbling N1 - "Selected bibliography": p. 122 ER -