Wherefore is this conference book on graphs and combinatorics different
from other such books?
One way is that it is, frankly, a progress report on recent results in the
field, and does not claim to be a definitive work. Another is that all contributions
have been refereed. A third way is that it contains both expository
review articles and research contributions.
We wish to thank A. J. Schwenk for his invaluable editorial assistance,
V. Chvatal and P. Hell for several constructive suggestions, and Mary Breen for
her masterly coordination and organization of the meeting. Certainly, not least,
we thank the accurate, fast, reliable typist, Debrah A. Johnson, whose neat work
can be seen on every page of this book.