Useful links:
Wolfram’s Interactive Periodic Table. Description pending.
KnowledgeDoor’s interactive Periodic Table. Extensive list of properties for each element, including cohesive energies, hardness, Young’s modulus, and many other properties.
The Elements. By Tom Lehrer.
MEMSNet. Description pending.
Etch Rates for Micromachining Processing. Description pending.
Material Etch Rate table. Description pending.