Davidson, John, 1944- Natural fertility awareness : : a practical guide to the natural achievement or avoidance of conception / [electronic resource] / John & Farida Davidson.. — Saffron Walden : : Daniel,, 1986.. — 135 p. : : ill. ; 22 cm.

Includes index.

Bibliography: p. 130-131.



ISBN: 0852071752 (pbk) : £4.95 9780852071755 (pbk)

Nat. Bib. No.: GB87-45691

Subjects--Topical Terms:
Natural family planning.

Subjects--Index Terms: Man Contraception Natural methods

LC Class. No.: RG136.5

Dewey Class. No.: 613.9/434