The nature of maps : essays toward understanding maps and mapping / Arthur H. Robinson and Barbara Bartz Petchenik. Robinson, Arthur Howard, 1915- Petchenik, Barbara Bartz, joint author. Cartography. Maps. GA105.3 .R62 526.8 RON Includes bibliographical references and index. Chicago : University of Chicago Press, 1976. 1976. 1976 Text xi, 138 p. : eng