The subscription for AccessEngineering expires on June 30, 2017 and will not be renewed due to substantial increase in subscription cost.
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Recommended alternatives to AccessEngineering include:
Knovel: Handbooks, encyclopedias and reference books for data and methods from more than 30 Sci-Tech publishers and professional societies
Springer eBooks: An ebook collection published by Springer
CRCnetBASE: Science and technology reference resources from CRC Press