Monograph

(n.) A written account or description of a single subject, or class of things; a special treatise on a particular subject of limited range.

Thesaurus Entries

article, causerie, descant, discourse, discussion, disquisition, dissertation, essay, etude, examination, excursus, exposition, feature, first approach, homily, introductory study, lucubration, memoir, morceau, note, outline, pandect, paper, paragraph, piece, preliminary study, prolegomenon, research paper, screed, sketch, special article, study, survey, term paper, theme, thesis, tract, tractate, treatise, treatment