XXI . Science and Technology

1. Science
1. General Reference
1. Bibliographies
2. Directories
3. Dictionaries
4. Statistics
5. Law and Legislation
2. History
3. General Studies and Philosophy
4. Research and Development
5. Study and Teaching
6. Technological Transfer
7. Scientists
8. Congresses
2. Mathematics and Computers
1. General Studies
2. Day Determinants
3. Computer Science
3. Astronomy
1. General Studies
2. Geodesy
3. Theoretical Astronomy and Celestial Mechanics
4. Astrophysics
4. Physics
1. General Studies
2. Study and Teaching
3. Meteorology and Climatology
1. General Studies
2. Climate Observations and Changes
3. Rain and Rainfall
4. Nuclear and Particle Physics
5. Geophysics and Geochemistry
1. Reference
2. General Studies
6. Geomagnetism
5. Geology
1. General Studies
2. Mineralogy
3. Petrology
4. Stratigraphy
5. Paleontology
6. Volcanology
1. General Studies
2. Volcanoes
1. Bibliography
2. Mount Pinatubo Eruption
3. Mount Taal
4. Volcanic Hazard Analysis
3. Seismology
7. Natural History
1. General Biology
1. General Studies
2. Genetics
2. Marine Biology
1. General Studies
2. Coral Reefs
3. Hookeriaceae
4. Coastal Zone Management
8. Botany
1. General Studies
2. Fern
3. Marine Algae
4. Medicinal Plants
5. Economic Plants
9. Zoology
1. General Studies
2. Invertebrates
3. Vertebrates
1. General Studies
2. Fish
3. Birds
4. Mammals
5. Wildlife Conservation
10. Technology
1. General Works
1. General Studies
2. Reference Works
3. Economic Aspects
2. Research and Development
1. General Studies
2. Technology Transfer
3. Biographies
4. Education
5. Engineering
1. General Studies
2. Civil Engineering
3. Construction Materials
4. Hydraulic Engineering
5. Women in Engineering
6. Motor and Space Vehicles
1. General Studies
2. Motor Vehicles
3. Space Vehicles
7. Quality Control
8. Hydrology
1. Reference Works
2. General Studies
9. Remote Sensing

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