• 4 Geology and Geophysics Library (Leith)
• 4 WHS State Archives Preservation Facility
• 3 Verona Shelving Facility
• 1 College Library
• 1 Memorial Library
• 1 Steenbock Library

• 6 DVDs
• 1 VHS Videocassettes

• 20 Geology
• 18 Earth sciences
• 18 Plate tectonics
• 17 Volcanic eruptions
• 11 History
• 11 Internal structure
• 10 Historical geology
• 10 Volcanology
• 9 Description and travel
• 8 Earthquakes
• 8 Physical geography
• 6 Natural history
• 6 Study and teaching
• 5 Volcanism
• 4 Science
• 4 Volcanic activity prediction
• 3 Eruptions
• 3 Geology, Structural
• 3 Geophysics
• 3 Physical geology
• 3 Social life and customs
• 3 Tsunamis
• 2 Antiquities
• 2 Earth (Planet)

• 16 Films Media Group
• 13 Films for the Humanities & Sciences (Firm)
• 9 BBC Worldwide Ltd.
• 9 Pumpkin TV (Firm)
• 6 Alexander Street Press
• 6 MagellanTV
• 5 British Broadcasting Corporation
• 5 Public Broadcasting Service (U.S.)
• 4 ARTE France
• 4 Bateman, Geoffrey
• 4 Bons Clients (Firm)
• 4 Camurat, Thibaut
• 4 Clark, Evan
• 4 Perrier, David
• 4 Shavit, Eden
• 3 Annenberg Learner (Firm)
• 3 Big Media
• 3 Bullfrog Films
• 3 Dallas County Community College District
• 3 Gilfillan, David
• 3 Glasshead Productions
• 3 Infobase
• 3 Lattanzio, Robert
• 3 National Geographic Channel (Television station : Washington, D.C.)
• 3 Sadd, James (James Lester)

• 98 English
• 5 Spanish
• 2 French
• 1 German
• 1 Mayan languages
• 1 South American Indian (Other)

• 14 Earth (Planet)
• 9 Iceland
• 7 Montserrat
• 6 Hawaii
• 5 Soufrière Hills Volcano (Montserrat)
• 4 Indonesia
• 4 Italy
• 4 Krakatoa (Indonesia)
• 4 Vesuvius (Italy)
• 3 Great Britain
• 3 Kilauea Volcano (Hawaii)
• 3 Krakatoa
• 3 Mexico
• 3 Papua New Guinea
• 3 Parícutin (Mexico)
• 3 Vanuatu
• 2 Etna, Mount (Italy)
• 2 Europe
• 2 Manam Island
• 2 Manam Island (Papua New Guinea)
• 2 Michoacán de Ocampo
• 2 Michoacán de Ocampo (Mexico)
• 2 Saint Helens, Mount (Wash.)
• 1 Africa, Central
• 1 Australia

Limit year range