Revision Control

http://en.wikipedia.org/wiki/Source_control

Software Reuse

http://www.buzzle.com/editorials/9-3-2004-58862.asp

Code reuse

http://en.wikipedia.org/wiki/Code_reuse

Reusable Components -- Decades of Misconceptions, Guidelines for Success

http://www.idinews.com/reUse.html

Design Guidelines for Class Library Developers

http://msdn.microsoft.com/en-us/library/czefa0ke%28vs.71%29.aspx