The Leda Programming Language 
Bug reports, book information, technical reports.
ftp://ftp.cs.orst.edu/pub/budd/leda/ReadMe.htmlAssignment #1: The Leda Programming Language Web Page 
Leda language overview.
http://www.cs.fit.edu/~dclay/cse5040/leda.html
Multiparadigm Programming in Leda 
By Timothy Budd; Addison-Wesley, 1994, ISBN 0201820803. First book on such programming. Many short chapters, easy to read, shows how unique features of each paradigm can be learned and applied concurrently via one tool. [Amazon.com]
http://www.amazon.com/exec/obidos/ASIN/0201820803
Leda Programming Language 
Multiparadigm language, by Timothy Budd, creator of Little Smalltalk, Oregon State University. Combines procedural (imperative), object-oriented, logic, and functional programming, in one coherent, unified system.
http://web.engr.oregonstate.edu/~budd/leda.html