Sommaire du Fascicule no. 1

Schensted algorithms for dual graded graphs
p. 5-45
Combinatorial $S\sb n$-modules as codes
p. 47-68
The homology of partitions with an even number of blocks
p. 69-92

Sommaire du Fascicule no. 2

The uniformly 3-homogeneous subsets of PGL$(2,q)$
p. 99-102
On spin models, triply regular association schemes, and duality
p. 103-144
An essay on the Ree octagons
p. 145-164
Group weighted matchings in bipartite graphs
p. 165-171
Twisted extensions of spin models
p. 173-182

Sommaire du Fascicule no. 3

Tough Ramsey graphs without short cycles
p. 189-195
A note on varieties of groupoids arising from $m$-cycle systems
p. 197-200
Splitting the square of a Schur function into its symmetric and antisymmetric parts
p. 201-231
Polygon posets and the weak order of Coxeter groups
p. 233-252
On generators of the module of logarithmic 1-forms with poles along an arrangement
p. 253-269

Sommaire du Fascicule no. 4

Quasi-varieties, congruences, and generalized Dowling lattices
p. 277-294
Some $p$-ranks related to orthogonal spaces
p. 295-316
A family of antipodal distance-regular graphs related to the classical Preparata codes
p. 317-327
Some new cyclotomic strongly regular graphs
p. 329-330
Plactification
p. 331-351