Murphy, Raymond, 1946- Essential grammar in use : a self-study reference and practice book for elementary students of english. With answers. - Cambridge, Gran Bretaņa Cambridge University Press 1990 - x, 259 p. 24 cm. ISBN: 0-521-35770-5 Subjects--Topical Terms: LENGUA INGLESA - GRAMATICA. Dewey Class. No.: 425/M957e