Specialty Search Roundup #4

Another week has gone by and the world of databases of special interest to the web researcher have appeared on ResourceShelf. Here's a look at a few of them along with a couple of database news items via ResourceShelf. By the way, the ResourceShelf site itself has also been updated and enhanced with a new look this week.

Past specialty search roundups:

+ Specialty Search Roundup #3
+ Specialty Search Roundup #2
+ Specialty Search Roundup #1