TY - BOOK ED - National Maritime Museum (Great Britain). TI - The Planispheric astrolabe PY - 1989/// CY - Greenwich [England] PB - National Maritime Museum KW - Astrolabes KW - fast KW - Astronomy KW - United Kingdom KW - Astrolabe planspheric KW - Waters D.W KW - Scientific instrument N1 - "First published 1976 ... Reprinted 1989."; Includes bibliographical references (page 55) and index ER -