Butterworth-Heinemann Engineering
Butterworth-Heinemann produces internationally-recognized professional books and reference texts in all branches of engineering for practitioners and students
http://www.bh.com/engineering

Centre For Advanced Engineering
Information and on-line ordering of publications covering a range of engineering and technology.
http://www.caenz.com/

Diagram
Schematic diagrams from a wide variety of countries.
http://www.diagram.com.ua/

Electrical Code Simplified
Books that explain and illustrate the application of the electrical code rules.
http://www.psknight.com

EMAS
Engineering and materials books.
http://www.emas.co.uk/

Engineering Education Service Center
Offering resource information designed to promote interest in engineering. Includes DVDs, apparel, and books.
http://www.engineeringedu.com/

Gulf Professional Publishing
Leading international publisher of books, CD-ROMS, and online services for petroleum, chemical, and process engineering professionals and students
http://books.elsevier.com/gulf/

Macatea Productions
Technical books, especially engineering texts. Site also contains technical articles.
http://www.macatea.com/

National Electrical Safety Code Handbook
Purchase the National Electrical Safety Code or McGraw-Hill's NESC Handbook (US).
http://www.codehandbook.com/

Schematic Diagrams
Database of schematic diagrams and service manuals from every country.
http://www.schematic.com.ua

Steward and Sons
Offers DSP books (FIR, IIR, recursive, nonrecursive, adaptive, estimation, detection), and Filter books (Butterworth, Bessel, nomographs, lowpass, highpass, bandpass, bandstop, allpass).
http://www.steward-sons.com

Techstreet
Engineering industry standards and technical books from many organizations.
http://www.techstreet.com/

U-View Technical Publishers
Television circuit diagrams, television servicing and video servicing books and cd roms.
http://www.u-view-circuits.co.uk/