Weir, Ruth Hirsch. Language in the crib / by Ruth Hirsch Weir. - The Hague : Mouton, 1970. - 216 p. ; graphs ; 27 cm. - Janua Linguarum ; no.14 . Bibliography: p. 213-216. LCCN: 74-188070 //r83 Subjects--Topical Terms: Language acquisition.