TY - BOOK AU - Malloch, John R. TI - A preliminary classification of diptera, exclusive of pupipora, based upon larval and pupal characters, with keys to imagines in certaín families SN - (M/BAJA) U1 - PA-C 595.77 M35 CY - Urbana, Illinois PB - Illinois State Laboratory of Natural History KW - Dípteros ER -