Deskribapena
Argitaratua:Began with no. 1 (Dec. 1973).
Alearen deskribapena:Each no. also has a distinctive title.
Description based on: No. 4 (July 1982); title from caption.
Deskribapen fisikoa:v. : ill. ; 28 cm.
Argitaratze maiztasuna:Irregular
ISSN:0092-9344
Antzeko dokumentuak:Issued also in French: Population reports. Série B, Les dispositifs intra-utérins.