The Libraries are resuming limited in-person research activities by appointment only as part of the University's Research Restart Plan.
Learn more about the Libraries' entry requirements and available services.

If you can’t find a digital version of an item you need in SearchWorks or HathiTrust, we’ll do our best to buy it. Request a digital item.

articles+ search results

558,922 articles+ results

View results as:
Number of results to display per page
hide topic overview


Scientists once thought that the seed plants were monophyletic, derived from a single common ancestor. It is now known they are polyphyletic, derived from more than one ancestral group. The distinctions can be seen in the variations among seed...

Salem Press Encyclopedia of Science, 2019. 2p.


Books, media, physical & digital resources
Catalog results include