Primary source of information on materials, coverage includes ferrous and non-ferrous metals, forming, casting, machining, heat treatment, welding, corrosion, properties and selection as well as information on composites...

The ASTM Standards is the primary source for standards or materials in the United States, covering almost any material of interest, from cloth to steel...

Probably the most extensive list of abbreviations for scientific journals available; although it serves as a source for abbreviations used in Chemical Abstracts...

Site covering the essentials of International System of Units (SI)...

Excellent source for maufacturing and industrial processes and machinery...

List of about 60,000 scientific periodicals published between 1900 and 1960 and held in British libraries...