Morrison, Robert Thornton. creator Boyd, Robert Neilson. text India Prentice Hall of India 1994 6th ed. monographic 1278 p. ; 547 MOR 8120307658 (paperback) 9788120307650 (paperback) 9788177581690 http://www.amazon.com/exec/obidos/ASIN/8120307658/chopaconline-20 http://www.amazon.com/exec/obidos/ASIN/8120307658/chopaconline-20