Thirumalai, M. S. Simultaneous acquisition of two languages : an overview / M. S. Thirumalai and Shyamala Chengappa ; edited by D. P. Pattanayek - Mysore : CIIL , c1986 - vii, 201 p. : 21 cm - CIIL occasional monographs series ; no. 33 . ISBN: PB Dewey Class. No.: 404.2