USE OF POLYMERIZING PLASTICS IN PREGNANCY PREVENTION. PRELIMINARY REPORT.
D035843:Biomedical Research; D003273:Contraceptive Devices; D005260:Female; D006801:Humans; D010969:Plastics; D011108:Polymers; D011247:Pregnancy; D012828:Silicones
D010969:Plastics; D011108:Polymers; D012828:Silicones
CONTRACEPTIVE DEVICES; POLYMERS; SILICONES