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Article Contentsp. 323p. 324p. 325p. 326p. 327p. 328p. 329p. 330p. 331p. 332p. 333p. 334p. 335p. 336p. 337p. 338p. 339p. 340p. 341p. 342p. 343p. 344

Issue Table of ContentsSystematic Zoology, Vol. 39, No. 4 (Dec., 1990), pp. 307-434Volume Information [pp. ]Front Matter [pp. ]Phylogeny as a Central Principle in Taxonomy: Phylogenetic Definitions of Taxon Names [pp. 307-322]Process and Pattern in the Evolution of Species Associations [pp. 323-344]Maximum Likelihood Inference of Phylogenetic Trees, with Special Reference to a Poisson Process Model of DNA Substitution and to Parsimony Analyses [pp. 345-361]Individual Variation in Avian Muscles and its Significance for the Reconstruction of Phylogeny [pp. 362-370]Nearest-Neighbor Analysis of Trilobite Morphospace [pp. 371-382]Bootstrap Analysis of Phylogenetic Trees Derived from DNA Hybridization Distances [pp. 383-390]Points of ViewOf Genetic Distances and Social Wasps [pp. 391-397]Farris on Haeckel, History, and Hull [pp. 397-399]Species and Neo-Darwinism [pp. 399-413]

ReviewsFlexible Phylogeny Reconstruction: A Review of Phylogenetic Inference Packages Using Parsimony [pp. 414-420]The Descriptive Attitude [pp. 420-423]

Meeting ReportMeetings of the International Commission on Zoological Nomenclature [pp. 424-425]

Books Received [pp. 426]Back Matter [pp. ]