AGRICOLA from USDA
AGRICOLA serves as the public catalog of the National Agricultural Library. It contains records for all of the holdings of the Library. It also contains citations to articles, much like PubAg. AGRICOLA also contains citations to many items that, while valuable and relevant to the agricultural sciences, are not peer-reviewed journal articles. Also, AGRICOLA has a different interface. So, while there is some overlap between the two resources, they are different in significant ways.