613-9432
W927O
               Oral contraceptives and neoplasia report of a WHO scientific group - Geneva : WHO, 1972.
               vi, 46p+tab - WHO technical report series; 817 .
                ISBN: 92-4-120817-1

130704
                Subjects: Contraceptives, Oral, Combined-adverse effects; Neoplasms-Chemically induced; Contraceptive drugs; Oral contraceptives; Tumors.