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1Publicado 1987Pretoria : Dept. of National Health and Population Development, 1987.26 p. : ill. ; 15 x 21 cm.
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2Publicado 1988Pretoria : [Dept. of National Health and Population Development, 1988?]1 folded page ; 21 cm.
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3Publicado 1986Pretoria : Dept. of National Health and Population Development, 1986.20 p. : ill. ; 21 cm.
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5Publicado 1989Pretoria : Dept. of National Health and Population Development, 1989.8 p. ; 21 x 10 cm.
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6Publicado 1978[Pretoria : Dept. of Health, 1978?]20 p. : ill. ; 21 cm.