Structural models :
Harary, Frank.
Structural models : an introduction to the theory of directed graphs / by Frank Harary, Robert Z. Norman and Dorwin Cartwright. - New York : Wiley, 1965. - ix, 415 p. : illu. ; 24 cm.
Includes glossary and index.
9780471351306 (hbk.) 047135130X (hbk.)
Mathematical models.
511.5 / HAR/S
Structural models : an introduction to the theory of directed graphs / by Frank Harary, Robert Z. Norman and Dorwin Cartwright. - New York : Wiley, 1965. - ix, 415 p. : illu. ; 24 cm.
Includes glossary and index.
9780471351306 (hbk.) 047135130X (hbk.)
Mathematical models.
511.5 / HAR/S