ldeo.columbia.eduの競合サイトトップ10

osti.gov

u.s. department of energy office of scientific and technical information - osti.gov is the primary search tool for department of energy science, technology, and engineering research information funded by the us department of energy and the organizational hub for the office of scientific and technical information. - homepage basic content,department of energy science,department of energy technology,department of energy engineering,department of energy research information,search tool,

jstor.org

jstor is a digital library of academic journals, books, and primary sources.

link.springer.com

providing access to millions of research articles and chapters from science, technology and medicine, and humanities and social sciences

researchgate.net

Access 160+ million publication pages and connect with 25+ million researchers. Join for free and gain visibility by uploading your research.

nature.com

Nature is the foremost international weekly scientific journal in the world and is the flagship journal for Nature Portfolio. It publishes the finest ...

sciencedirect.com

sciencedirect is the world's leading source for scientific, technical, and medical research. explore journals, books and articles.

scholar.google.com

google scholar provides a simple way to broadly search for scholarly literature. search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

github.com

Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.