a complete publication of generally less than 80 pages stitched or stapled together and usually having a paper cover.

a short treatise or essay, generally a controversial tract, on some subject of contemporary interest

a political pamphlet.

noun

announcement , broadside , brochure , bulletin , circular , compilation , flyer * , folder , handout , leaflet , throwaway , tract , tractate , booklet , ephemera , ephemeron , flyer , handbill , manual , monograph , treatise