Friedrich K. Juenger, professor of law at the University of California, Davis, who was a leading authority on private international law, died Friday of lung complications. He was 70. Juenger, who had been a professor at the law school since 1975, taught conflict of laws, comparative law, international transactions and torts. He had published and lectured widely both in the United States and abroad. Fluent in four languages, Juenger was the author of four books and numerous articles published in American and foreign journals. While teaching and writing were his passions, Juenger taught as a visiting professor at universities in Australia, France, Germany, Italy, New Zealand and Uruguay. "Fritz will be deeply missed by all of us in the law school," said Rex Perschbacher, dean of the UC Davis School of Law. "We have suffered a tremendous loss with the passing of our dear colleague, teacher and friend. Words cannot do justice to what he has meant to King Hall. Besides being an international scholar whose work was known all over the world, Fritz was the consummate law teacher and his students loved him for it. As a scholar Fritz was instrumental in helping to establish the UC Davis School of Law's scholarly reputation." Juenger received numerous awards and honors during his tenure at the law school, including the Distinguished Teaching Award in 1985. A Fulbright senior researcher, Juenger was also a legal adviser to foreign countries and a member of many international legal societies and associations. He received his legal degree from Columbia University Law School in 1960 and a masters of law degree from the University of Michigan. Following graduation he practiced law until 1966 when he joined the faculty at Wayne State University. Ten years later he joined the UC Davis School of Law. He is survived by his wife, Barbara; their two children, Thomas, of Los Angeles, and John, of Los Angeles. A memorial service is being planned.