00514nam a2200145 a 450000500170000000800410001724500930005826000590015130000230021044000450023350000200027865000270029865000320032585200110035720190520020605.0080122s19uu    xx            00    eng d10aWorld beneath the sea /cby James Dugan ... [et al.] ; foreword by Gilbert M. Grosvenor.0 aWashington, DC :bNational Geographic Society,cc1967.  a204 p. : col. ill. 0aNational Geographic books, 2nd ser., v.2  aIncludes index.  aUnderwater exploration  aOceanographyxPopular works  7OLOPSC