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International survey of laws on assisted procreation
compiled and edited by Jan Stepan = Recue...
Bok Engelsk 1990
Law and development classification plan
Cohen, Morris L.
Bok Engelsk 1976
The world's laws and practices on population and sexuality education
Kellogg, Edmund H.
Bok Engelsk 1975
The world's laws on contraceptives
Stepan, Jan
Bok Engelsk 1974