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The Mathematical Association of America (http://maa.org)

Mathematical Sciences Publishers (http://mathscipub.org)

Pacific Journal of Mathematics (http://pjm.math.berkeley.edu/pjm/)
Annals of Mathematics (http://annals.math.princeton.edu/) (beginning July 2009)
Complete list of journals (http://www.mathscipub.org/journals.html)

Publish or Perish, Inc. (http://mathpop.com)

Spivak, A Comprehensive Introduction to Differential Geometry, 3rd edition (http://mathpop.com/bookhtms/dg.htm)
Spivak, Calculus, 4th ed. (http://mathpop.com/bookhtms/cal.htm)

Math Department, Publisher Walter de Gruyter (http://www.degruyter.de/cont/fb/ma/maEn.cfm)

Mathematical Sciences Research Institute (http://www.msri.org/)

William F. Trench, Ph.D. (http://ramanujan.math.trinity.edu/wtrench/index.shtml) Andrew G. Cowles Distinguished Professor (Retired)

Introduction to Real Analysis, Pearson Education, 2003. (http://ramanujan.math.trinity.edu/wtrench/misc/index.shtml) (Updated May 2012) PDF (583 pp, 3.63 MB) free of charge