Diptera – 1. Introduction and key to families. Categories: Out of print handbooks, Publications Biological recording & species identification Diptera RES Handbooks for the Identification of British Insects Volume 9, Part 1 H. Oldroyd. 1954 - 54 pages Description Description DownloadDownload Diptera Introduction and key to families, RES Handbooks for the Identification of British Insects, Volume 9, Part 1 Important information about shipping delivery times and goods exported from the UK