Desktop publishing is essentially dealing with the content aspect of the publishing industry. It is dealing with layouts, placement, content, imagery, and just about everything else that is required of putting together a published piece with the except of the written content and the actual printing aspect of it. It is the heart and soul of the publishing business.

To correct what the previous answerer stated, the current world of graphic design goes far beyond just logos. These days graphic designers are not only expected to design logos and stationery, but also know a significant amount of desktop publishing, typography, printing, and to a lesser extent photography, advertising, and web design. We are expected to know a little bit of everything when it comes to designing projects.

To answer your question, yes, what you are interested in is desktop publishing. However, there are very few jobs these days that are purely desktop publishing with the except of the newspaper industry. Anything that involves designing layouts these days are turned over to graphic designers, so if that’s what you’re interested it in then that should be what you should be pursuing.

Good luck to you in your future endeavors.