TY - BOOK AU - Perkins,C.R. AU - Parry,Robert B. TI - Information sources in cartography T2 - Guides to information sources SN - 0408024585 (acidfree paper) AV - Z 6021 .I5 U1 - 016.526 20 PY - 1990/// CY - London, New York PB - Bowker-Saur KW - Cartography KW - Bibliography N1 - Includes bibliographical references and indexes ER -