Algebraic Curves and Projective Geometry : Proceedings of the Conference held in Trento Italy March 21–25 1988 On regular and stable ruled surfaces in P3 Appendix to On regular and stable ruled surfaces in P3 Configurations of linear projective subvarieties Plane sections of arthmetically normal curves in 3 Sur les lacunes dHalphen Some results on the codimension two Chow group of the moduli space of stable curves Restrictions of linear series to hyperplanes and some results of Macaulay and Gotzmann La Rationalité des schémas de Hilbert de courbes gauches rationnelles suivant Katsylo Cohérence et dualité sur le gros site de Zariski Nouvelles fonctions constructibles et rang des images directes Generating six skew lines in 3 Liaison of families of subschemes in Pn. On curves on K 3 surfaces Gonality and Hilbert schemes of smooth curves Geometry of complete cuspidal plane cubics Unobstructed arithmetically Buchsbaum curves On the Néron Severi groups of the surfaces of special divisors Deformations of maps Greens conjecture for general P gonal curves of large genus On rank 1 degenerations of abelian varieties Sur une conjecture de Griffiths et Harris Open problems.