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Reproductive health care
international symposium, oct. 10-15, 1982
Pages
30
Research on the regulation of human fertility (1+2)
Needs of developing countries and priorities for the future
Authors
Egon Diczfalusy
Rettet das Leben
Tagungsberichte
Pages
1
Rhythm calculator
Patent 2513196
Authors
Park L. Morse
Pages
12
Rhythm clock
Patent 3.472.018
Authors
Walter A. Papworth
Pages
5
Rhythmic cycle calculator
Patent 2.532.819
Authors
Park L. Morse
Pages
6
Rhythmic cycle calendar
Patent 2.161.345
Authors
Velma A. Gates
Pages
4
Rhythmic cycle indicator
Patent 2.494.291
Authors
James P. Fay
Pages
4