00625nam a22001811 4500 1/17617 010716s1969 enk eng 18142 DLC GR-PeUP 512.5 HA Ann Arbor Graph Theory Conference, (2d : 1968.) Proof techniques in graph theory;$bproceedings/ Ed. by Frank Harary. New York; Academic Press, 1969. xv, 330 p. ill. 25 cm. Includes bibliographical references. Graph theory. Halary, Frank, ed. INST UNIPILB MAIN 20040709 512.5 HA 00136616 00136616 LOAN 0 1