The tao of love and sex : the Ancient Chinese way to ecstasy / by Jolan Chang ; foreword and postscript by Joseph Needham. - New York : E.P. Dutton, 1977. - 136 pages : illustrations ; 26 cm. - 176+613.88 (NLA) . Includes index. ISBN: 052548230X Universal Decimal Class. No.: 176+613.88 (NLA)