The "Sumerian Grammar" by Professor D.O. Edzard will become a classic. An up-to-date, reliable guide to the language of the Sumerians, the inventors of cuneiform writing in the late 4th millennium B.C.
Dietz Otto Edzard, Ph.D. (1955) in Assyriology, University of Heidelberg, is Emeritus Professor of Assyriology at Munich University. He published extensively on Ancient Mesopotamian (Sumerian and Akkadian) history, literature, religion, linguistics, and history of law including Gilgamesh und Huwawa (1993) and Gudea and His Dynasty (1997).