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- 理科年表（東京天文台・1987年ー）
A historical and authoritative science data book first published in 1925, covering all fields of the natural sciences. Known as a "dictionary of nature." - J-GLOBAL 科学技術総合リンクセンター（独立行政法人科学技術振興機構)
Unified search platform for literature, patents, research projects, researchers, organizations, chemical substances, genes, and related data in science, medicine, and pharmacology.
Mathematics
- 大学数学ことはじめ : 新入生のために（東京大学出版会・2019年）
Designed for first-year science students at the University of Tokyo, this textbook builds on high school mathematics to introduce university-level concepts. - 因果推論の科学：「なぜ?」の問いにどう答えるか（文藝春秋・2022年）
Written by one of the pioneers of the field, this book introduces causal inference to general readers using concrete examples and intuitive explanations. - MathSciNet（American Mathematical Society）
A comprehensive bibliographic and review database for global mathematical literature, including Mathematical Reviews (est. 1940) and Current Mathematical Publications (est. 1969). Searchable by paper, review, or author.
Physics
- ファインマン物理学シリーズ（岩波書店・全16冊）
A globally acclaimed series by physicist Richard P. Feynman, considered a cornerstone of modern physics education. - スバラシク実力がつくと評判の力学キャンパス・ゼミ : 大学の物理がこんなに分かる!単位なんて楽に取れる！（マセマ・2018年）
A visually accessible and beginner-friendly guide covering foundational to advanced university-level mechanics. Part of a popular series praised for clarity. - よくわかる解析力学（東京図書・2013年）
A thorough and approachable textbook on analytical mechanics, highlighting common pitfalls for beginners. Widely recommended in academic settings.
Chemistry
- 化学書資料館 (日本化学会)
A searchable database covering handbooks, experimental chemistry guides, and dictionaries of standardized chemical terminology. - 化学工学会 電子図書館（化学工学会）
Access to journals, conference summaries, and technical reports published by the society. - CAS SciFinder Discovery Platform for Academics（Chemical Abstracts Service）
A powerful research database offering access to literature, patents, chemical substances, and organic reactions worldwide, with an intuitive user interface. - The Merck Index Online (Royal Society of Chemistry)
Authoritative online database for compounds, pharmaceuticals, and biologics, updated quarterly for the latest data.
Earth Science
- はじめて学ぶ大学教養地学 = Earth science for liberal arts students（慶應義塾大学出版会,・2020年）
A comprehensive liberal arts textbook covering solid Earth, atmosphere/ocean systems, and astronomy. Also available as an e-book. - 地球科学入門 : カラー図解 : 地球の観察 : 地質・地形・地球史を読み解く（講談社・2020年）
Beginner-friendly book with rich illustrations that visually explain geological structures, terrain, and Earth’s history. Available digitally as well. - 地球惑星システム科学入門（東京大学出版会・2009年）
Presents a comprehensive view of Earth and planetary systems with clear explanations of complex structures. Ideal for building foundational understanding.
