Kotwal, Firoze M. and James W. Boyd, ed. and English translation.  Guide to the Zoroastrian Religion: A Nineteenth Century Catechism with Modern Commentary (Studies in World Religions, 3).  Chico, CA: Scholars Press/Harvard College,1982.  vii - vlvi + 270p.  6.00x0.75x9.00.  Brownish-gray paper wrappers with black titling.  Vintage softcover book in VERY GOOD condition.  Clean, unmarked interior pages.  Shelf soil to lower page edges.  Wrappers are slightly rumpled-looking, with soft bends and corner wear.  Includes glossary and index.