**some typos in CS672 references**
Berge: Who Killed the Duke of Densmore

page 11, near middle: "which Betty" --> "which Diana"
Ramirez-Alfonsin,Reed: Perfect Graphs

page 3, definition of Cartesian product of a graph,
line 11: "or ac in E1, AND (ii) ..."
page 31, Figure 3.2;
vertices d,f should each be replaced by only one vertex in knotting graph
pg 98, (Section 5.3) "Their Algorithm also implies a linear-time
recognition method for comparability graphs."
-> linear-time recognition of comparability graphs? Perhaps
the authors wanted to say something different here.
pg 125, (def 6.20, case (b) ) "for any vertex which..."
-> Change to "for any vertex x which..."
pg 125, (Figure 6.6) "Verticles x and y form a text over..."
-> Correct to "Vertices" and "tent"
pg 130, (Definition 6.29) "...if its verticles can be..."
-> Correct to "vertices"
pg 134, (7 paragraphs before 'Acknowledgements') "Chatal and Sbihi..."
-> Correct to "Chvatal"
pg 134, (Acknowledgements) "... Sri Sitharan,..."
-> Correct lastname to "Sritharan"
pg 142, (Section 7.2.3) "...that runs in (DELTA m) time, where..."
-> Should this be "...O(DELTA m) time..."?
pg 148, (Section 7.5.2) "Preissmann,..., found a subgraph
characterization of supperbrittle graphs."
-> Correct to "superbrittle"
pg 161, (Section 7.9.3) "An odd antihole can be perfectly oriented."
-> Did the author want "hole" ? (as this is supposed to be
an obvious observation showing that perfectly oriented is not
necessarily perfect.)
pg 173 (Table 8.1) "Known results under the prediate*"
-> Correct "prediate" to "predicate"
pg 181, (Reference 4) "A. and Bondy U.S.R. Murty. Graph Theory..."
-> Correct to "A. Bondy and U.S.R. Murty."