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Estados Unidos de América - Number of scientific and technical journal articles

412.542
(número)
en 2013

Scientific and technical journal articles refer to the number of scientific and engineering articles published in the following fields: physics, biology, chemistry, mathematics, clinical medicine, biomedical research, engineering and technology, and earth and space sciences.

Fecha Valor Cambiar, %
2013 412.542 -0,53 %
2012 414.759 1,32 %
2011 409.370 2,83 %
2010 398.122 2,60 %
2009 388.037 1,51 %
2008 382.257 1,43 %
2007 376.883 1,56 %
2006 371.105 2,00 %
2005 363.816 8,58 %
2004 335.064 11,73 %
2003 299.876 2,70 %
2002 291.996