de Schweinitz, K. How a baby is born : what every child should know / K. de Schweinitz. - 2nd. ed. - London : Routledge & Kegan Paul, c 1956. - 63 p. : ill. ; 18 cm. 322 322 Subjects--Topical Terms: Sex instruction.Reproduction. Dewey Class. No.: 574.16 / D34h