  The present volume is the collection of contributions by friends of Holger
Bech Nielsen for his 60th birthday.
  Contents:
  1.Unified internal space of spins and charges (N. Mankoc Borstnik)
2.Semitopological Q-Rings (M. Axenides) 3.Non-local axial anomalies in the
Standard model (D. Melikhov, B. Stech) 4.Could there be a fourth generation?
(C.D. Froggatt) 5.Another complex Bateman equation (D.B. Fairlie)
6.Non-associative loops for Holger Bech Nielsen (P.H. Frampton) 7.Particles,
fluids and vortices (J.W. van Holten) 8.Results on 2D current algebras (J.L.
Petersen) 9.Phase transition in gauge theories and the Planck scale physics
(L.V. Laperashvili and D.A. Ryzhikh) 10.Some remarks on the 'classical' large N
limit (P. Olesen) 11.String theory and the size of hadrons (L. Susskind)
12.Relativity and $c/sqrt3$ (S.I. Blinnikov, L.B. Okun and M.I. Vysotsky)
13.Vortices (Jeff Greensite)
