Mangal, S. K. . Essentials of Educational Psychology / Textual Documents S. K. Mangal. - 1st ed / - New Delhi : Prentice-Hall of India(Pvt Ltd) , 2007. - 726p ; 23 cm. ISBN: 81-203-3055-2 Subjects--Index Terms: Education G-Education Dewey Class. No.: 370.15 / Ma 313 Es