"The type of heading that they are": yes, there's the rub. If it's to be done properly, a lot more than a section number from the subjects manual is required. (Unless—we should live so long—the instructions in the manual are simplified and/or rationalized.) See the two files here (which date from the later 1980s, as I recall):

 

                http://files.library.northwestern.edu/public/Subjects/

 

Gary L. Strawn

Northwestern University Libraries

Northwestern University

1970 Campus Drive, Evanston IL 60208-2300

e-mail: [log in to unmask]    

office: 847/467-7240

storage facility: 847/467-4619

authority toolkit documentation: http://bit.ly/1Hl1jST

Forsan et haec olim meminisse iuvabit