Williams, Ray. Communication in english for technical students / Ray Williams,Rabindranath Ray and John Swales. - / . - New Delhi : Orient Longman , 2007. - x,216p. : tables ; 18cm . NULL ISBN: 9788125008316 Rs. 175.00 Subjects--Index Terms: LANGUAGE AND EDUCATION Dewey Class. No.: 372.6521 / RAY/C