Filter your search by...
- Division of Behavioral and Social Sciences and Education
- Division on Earth and Life Studies
- Board on Agriculture and Natural Resources
- Board on Atmospheric Sciences and Climate
- Board on Chemical Sciences and Technology
- Board on Earth Sciences and Resources
- Board on Environmental Studies and Toxicology
- Board on Life Sciences
- Board on Radiation Effects Research
- Board on Radioactive Waste Management
- Commission on Geosciences, Environment and Resources
- Disasters Roundtable
- Institute for Laboratory Animal Research
- Natural Disasters Roundtable
- Nuclear and Radiation Studies Board
- Ocean Studies Board
- Polar Research Board
- Roundtable on Science and Welfare in Laboratory Animal Use
- Water Science and Technology Board
- Division on Engineering and Physical Sciences
- Gulf Research Program
- Health and Medicine Division
- National Academy of Engineering
- National Academy of Medicine
- National Academy of Sciences
- Policy and Global Affairs
- Transportation Research Board
- Agriculture
- Behavioral and Social Sciences
- Biography and Autobiography
- Biology and Life Sciences
- Computers and Information Technology
- Conflict and Security Issues
- Earth Sciences
- Education
- Energy and Energy Conservation
- Engineering and Technology
- Environment and Environmental Studies
- Food and Nutrition
- Health and Medicine
- Industry and Labor
- Math, Chemistry, and Physics
- Policy for Science and Technology
- Space and Aeronautics
- Surveys and Statistics
- Transportation and Infrastructure
- Adolescent Health and Well-Being
- Advising the U.S. Global Change Research Program
- Airborne Chemical Exposure
- American Geophysical Union
- Arctic
- BCYF 25th Anniversary
- Biosecurity
- Cancers and Children
- Celebrating the Eclipse: The Sun and Our Space Environment
- Climate Adaptation
- Climate Change
- Clinical Trial Data Sharing
- Competitiveness
- Coronavirus Resources
- Cosmos
- CPNAS Exhibition Catalog Collection
- Crisis Standards of Care
- Critical Issues in Transportation
- Cybersecurity
- Dietary Reference Intakes
- Diversity and Inclusion in STEMM
- Diversity, Equity, and Inclusion
- Emergency Preparedness / Disaster Management
- Energy
- Environmental Health Matters Initiative
- Ethical Foundations of Science
- Everglades
- Evolution
- Flood Resilience: Preparedness and Recovery
- Frontiers of Engineering
- Genomics
- Health Literacy
- Heart Health
- Higher Education
- Highway Planning
- Immigration
- Infectious Disease
- Informal Learning
- International Cooperation to Reduce Global Threats
- Laboratory Safety
- Law and Justice
- Mathematics
- Next Generation Science Standards
- Nutrient Requirements of Animals
- Obesity Prevention
- Oil Spill Prevention and Response and Deepwater Horizon
- Our Most Downloaded 2021 Publications
- Our Most Downloaded 2022 Publications
- Our Planet, Our Future: Nobel Prize Summit Reading List
- Pain Management and Opioid Use Disorder
- Pandemic and Seasonal Influenza Vaccine Preparedness
- Planetary Protection
- Pollinator Conservation
- Quality Chasm
- Reproducibility
- Safe Bridge Design and Construction
- Science Communication
- Social Capital and Social Connectedness
- Space Exploration and Weather
- Stem Cells
- STEM Education
- Supply Chains
- Teaching Math
- The Vital Role of Nursing in Health Care
- Tobacco
- Transportation and Sustainability
- Transportation Emergency Resources
- Urban Planning and Development
- Vaccines
- Veterans Health
- Water Infrastructure
- Wildfires: Preparation, Management, and Health Effects
- Women's Adventures in Science
Sort Results
Search Tools
Download Citations
1 - 1 of 1 resultsSearch results for "class periods"
Consensus Study Report
Reducing the Threat of Improvised Explosive Device Attacks by Restricting Access to Explosive Precursor Chemicals (2018)
National Academies of Sciences, Engineering, and Medicine; Division on Earth and Life Studies; Board on Chemical Sciences and Technology; Committee on Reducing the Threat of Improvised Explosive Device Attacks by Restricting Access to Chemical Explosive Precursors
Conflict and Security Issues | Math, Chemistry, and Physics