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Information on each of these volumes, including tables of contents, as well as the method of ordering them, can be found at www.ashgate.com. On this site go to Variorum on the upper right, then enter author and/or title.The most recent volume is:ISLAMIC ASTRONOMY AND GEOGRAPHYVariorum Collected Studies CS1009, published December 2012Hardback, 428 pp., 88 b&#38;w illustrationsISBN: 978-1-4094-4201-1; BL Ref.: 520.9'1767-dc23LoCCN: 2012931346A new collection of studies that give appropriate attention to the Islamic tradition of instrumentation is:ASTROLABES FROM MEDIEVAL EUROPEVariorum Collected Studies CS977, published July 2011Hardback, 422 pp,, 148 b&#38;w illustrationsISBN: 978-1-4094-2593-9; BL Ref.: 522.4'094'0902-dc22LoCCN: 2010940591An earlier Variorum reprint volume is still in print, and every year 1-3 copies are sold. It seems to me that perhaps the subject of this volume deserves a wider audience than this, so I include mention of it here:ASTRONOMY IN THE SERVICE OF ISLAMVariorum Collected Studies CS416, published October 1993Hardback,352 pp., 42 b&#38;w illustrationsISBN: 978-0-86078-357-2