Biomedical Aspects of IUDs Paris> BIBLIOGRAPHICAL SOURCES CONSULTED THESAURUS O.P BIBLIOGRAPHICAL SOURCES CONSULTED THESAURUS UPDATING FULL THESAURUS A Z MICROTHESAURI AGRICULTURAL AND RURAL LAW AGRICULTURAL ECONOMICS COUNTRIES LIVESTOCK Optical is primarily an indoor technology where it need not compete with sunlight and offers advantages such as the immediate availability of a broad bandwidth without the need for regulatory approval The papers evaluate biologic interactions be tween intrauterine contraceptive devices and the host MALL HAEFELI INTRODUCTION The ever increasing world wide use of the IUD has prompted intensive research into the physiology of its contraceptive action