Science And Education x402 offerings

Top papers driving an element's research intensity (title, DOI, venue, year, citations).

Top papers driving a research topic's research intensity (title, DOI, venue, year, citations).

Yearly RIS/HRI research-intensity history for one chemical element.

The chemical elements most associated with one research topic.

Current RI, RIS, HRI and paper count for one research topic.

Book search over Open Library: title, authors, first publication year, subjects, ISBNs and edition count

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Works that entered the public domain on 1 January 2000 in life-plus-70 countries (authors who died in 1929): catalogued books with free editions linked where they exist. Public Domain Day lists for 2000. $0.01 per page of 20.

Works that entered the public domain on 1 January 2001 in life-plus-70 countries (authors who died in 1930): catalogued books with free editions linked where they exist. Public Domain Day lists for 2001. $0.01 per page of 20.

Works that entered the public domain on 1 January 2002 in life-plus-70 countries (authors who died in 1931): catalogued books with free editions linked where they exist. Public Domain Day lists for 2002. $0.01 per page of 20.

Works that entered the public domain on 1 January 2003 in life-plus-70 countries (authors who died in 1932): catalogued books with free editions linked where they exist. Public Domain Day lists for 2003. $0.01 per page of 20.

Works that entered the public domain on 1 January 2004 in life-plus-70 countries (authors who died in 1933): catalogued books with free editions linked where they exist. Public Domain Day lists for 2004. $0.01 per page of 20.

Works that entered the public domain on 1 January 2005 in life-plus-70 countries (authors who died in 1934): catalogued books with free editions linked where they exist. Public Domain Day lists for 2005. $0.01 per page of 20.

Works that entered the public domain on 1 January 2006 in life-plus-70 countries (authors who died in 1935): catalogued books with free editions linked where they exist. Public Domain Day lists for 2006. $0.01 per page of 20.

Works that entered the public domain on 1 January 2007 in life-plus-70 countries (authors who died in 1936): catalogued books with free editions linked where they exist. Public Domain Day lists for 2007. $0.01 per page of 20.

Works that entered the public domain on 1 January 2008 in life-plus-70 countries (authors who died in 1937): catalogued books with free editions linked where they exist. Public Domain Day lists for 2008. $0.01 per page of 20.

Works that entered the public domain on 1 January 2009 in life-plus-70 countries (authors who died in 1938): catalogued books with free editions linked where they exist. Public Domain Day lists for 2009. $0.01 per page of 20.

Works that entered the public domain on 1 January 2010 in life-plus-70 countries (authors who died in 1939): catalogued books with free editions linked where they exist. Public Domain Day lists for 2010. $0.01 per page of 20.

Works that entered the public domain on 1 January 2011 in life-plus-70 countries (authors who died in 1940): catalogued books with free editions linked where they exist. Public Domain Day lists for 2011. $0.01 per page of 20.

Works that entered the public domain on 1 January 2012 in life-plus-70 countries (authors who died in 1941): catalogued books with free editions linked where they exist. Public Domain Day lists for 2012. $0.01 per page of 20.

Works that entered the public domain on 1 January 2013 in life-plus-70 countries (authors who died in 1942): catalogued books with free editions linked where they exist. Public Domain Day lists for 2013. $0.01 per page of 20.

Works that entered the public domain on 1 January 2014 in life-plus-70 countries (authors who died in 1943): catalogued books with free editions linked where they exist. Public Domain Day lists for 2014. $0.01 per page of 20.

Works that entered the public domain on 1 January 2015 in life-plus-70 countries (authors who died in 1944): catalogued books with free editions linked where they exist. Public Domain Day lists for 2015. $0.01 per page of 20.

Works that entered the public domain on 1 January 2016 in life-plus-70 countries (authors who died in 1945): catalogued books with free editions linked where they exist. Public Domain Day lists for 2016. $0.01 per page of 20.