McClay, K.R.. The Mapping of Geological Structures / Textual Documents K.R.McClay. - 1st ed. / - New York : John Wiley & Sons , 1987. - 160p. ; 18cm. ISBN: 0 471 93243 4 Subjects--Index Terms: Geological Mapping Deptt.-Geology Dewey Class. No.: 551 / Mc 118 Ma