Long-term studies on side-effects of contraception - state and planning - Kellhammer Ursula ed.; Symposium of the Study group 'Side Effects of Oral Contraceptives - Pilot Phase; Symposium of he study group 'side effects of oral contraceptives - pilot phase' Munich, Germany 27-29 Sep 1977 (Berlin Springer-Verlag, 1978)
Keywords: Contraceptives; Family planning