Contents of Volume 3, Number 4 October 1995

Existence of Biological Populations Stabilized by Diffusion
L.E.BOBISUD, J.E.CALVERT AND W.D.ROYALTY
Pages 325 - 344

Non-Existence, Uniqueness of Limit Cycles and Centre Problem in a System that Includes Predator-Prey Systems and Generalized Liénard Equations
A.GASULL AND A.GUILLAMON
Pages 345 - 366

Tridiagonal Competitive-Cooperative Kolmogorov Systems
H.I.FREEDMAN AND H.L.SMITH
Pages 367 - 382

Existence and Multiplicity of Periodic Solutions for a Liénard Differential System
YONG-HOON LEE
Pages 383 - 392

Existence and Multiplicity for an O.D.E. with Nonlinear Boundary Conditions
C.REBELO AND L.SANCHEZ
Pages 393 - 406

Large-period Forced Oscillations to Higher-Order Pendulum-type Equations
JAN ANDRES
Pages 407 - 422

AUTHOR INDEX FOR VOLUME 3
Pages 423 - 423

CONTENTS OF VOLUME 3
Pages 424