College publications are given 2-part "pub numbers" that are used to identify them. The first part (the prefix) is a set of letters that indicates which series the document belongs to. A series is a grouping of documents that share similar content. The second part of the pub number is just a sequential number.
In descending order, by date published.
4/15/2006 (reprinted)
Authors: Bill Fountain
Departments: 4-H Programs, Horticulture
Series: 4-H Natural Science: Geology and Minerals (4DB series)
Size: 905 kb
Pages: 28
