Searching for online articles

Finding Articles Online
Most researchers are familiar with the value-added online services such as Dialog and Factiva; I also covered Yahoo's Search Subscriptions service which lets you search a number of the fee-based online services without a subscription. See my July 2005 Search Tip of the Month for more details.
But there are other options for conducting preliminary research, particularly in the academic, scholarly and sci-tech areas, that aren't as consistently available in full text through the fee-based online services. The following is a list of some of the services I have found useful, particularly for more obscure topics.  
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