Just type in your key word(s), like standard model (no need for quotes, we phrase-search by default), and select

You'll get results ranked in relevancy clusters, or grouped in a way most likely to match your search query.

Unlike many search engines, our results are retrieved in real time, so it could take a minute.

Our progress bar will time out in 50 seconds. This means that if a particular database is running slow, you may not get all those results during that search session.

Maybe you'd rather see your results listed by the source that sponsored the research. Select .

You can also select to explore deeper into each organization's resources

Select the individual database or web site to go directly to that site.

Select the linked title or PDF logo to view a specific record or document OR select the checkboxes of items you wish to view. (Note: full text may not be available for every record.)

selects all your results for further viewing on our Marked Records page.

presents a list of results you marked during the current session.

will delete all previous marks. Use this on a routine basis to erase marked items from the session.

sends you back to your search page.

lets you search directly from the results page.

gives you one seamless, scrollable list, displaying an expanded version of all selected documents.

indicates a full-text PDF is available for that result.

clears all your marked records. Records are automatically cleared after viewing.

returns you to your original result list.

Full-text searching is available when supported by the selected organization's database.

You'll know the full-text PDF is available when you see the PDF icon .

"And" and "Or" operators are generally supported (for example, searching frogs or toads returns results with either or both words).

There's no need to use quotes for phrases - we phrase-search by default.

Wildcard character * (asterisk) is supported in several, but not all, databases (for example, ecolog* will find both ecological and ecology).

Search is not case sensitive (for example, RAIN, Rain, and rain will produce the same results).

Results are linked to expanded information.

Default results are returned in QuickRank™ order.

Results may be displayed by organization source, if desired.

Total number of search results may be restricted by the database.

Our special QuickRank™ formula filters results, sending you the most relevant returns.

This means that the number of QuickRank returns may differ from the number of raw returns from the individual source listing, which aren't filtered by QuickRank.

Results will be returned in relevancy clusters : indicates very high relevancy, indicates high relevancy, indicates medium high relevancy, indicates low relevancy.

Our QuickRank filter is based on placement of key words: If your key word is not in a prime location in the document, likely the result won't be ranked.

Your results will contain top tier databases in terms of relevancy. But, you can also visit the for further investigation.

If your search only returns three (3) or fewer ranked results, we'll send you directly to our display by source.