Lewis, David, 1942- The secret language of your child : how children talk before they can speak / by David Lewis. - London : Souvenir Press, 1978. - 288 p. : ill. ; 23 cm. ISBN: £4.95 LCCN: 79303954 Nat. Bib. No.: GB*** Subjects--Topical Terms: Infant psychology.Child psychology.Children--Language.Nonverbal communication. LC Class. No.: BF723.I6 / L415 1978 Dewey Class. No.: 401.930 83 LEW