This section allows searching for organizations which are coded under a particular subject category. The start screen begins with Level 1 of UIA's Classified Subject Guide and Index. There are a total of 3 levels.
![](/sites/uia.org/files/userguide/ybio-subjects1.png)
![](/sites/uia.org/files/userguide/ybio-subjects2.png)
![](/sites/uia.org/files/userguide/ybio-subjects3.png)
This section allows searching for organizations which are coded under a particular subject category. The start screen begins with Level 1 of UIA's Classified Subject Guide and Index. There are a total of 3 levels.