A quarterly index of all documents received in the Library of Michigan.
Entries are by issuing agency, author, title and subject.
The first part is always the symbol for the department of state government which issued the document. For each executive department, the symbol is composed of the initial letter or letters of the key word in the department's name. No punctuation is used after the principal department symbol. The second part of the classification number is the symbol for the issuing agency , bureau or division within the principal department. Not all documents will need this part.