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by H. J. de Blij (Marshall Univ.); Alexander B. Murphy (Univ. of Oregon)
by H. J. de Blij (Univ. of Michigan ); Peter O. Muller (Univ. of Miami)
by H. J. de Blij (Univ. of Miami); Alexander B. Murphy (Univ. of Oregon)
by H. J. de Blij (Michigan State University ); Peter O. Muller (Univ. of Miami)
by de Blij, H. J.
by H. J. de Blij (Michigan State University ); Peter O. Muller (University of Miami )
by H. J. de Blij (Michigan State Univ.); Peter O. Muller (Univ. of Miami)
by H. J. de Blij (Michigan State University ); Charles Fuller (Triton College )
by Editor: H. J. de Blij (Michigan State University ); Editor: Roger Downs (Penn State University ; )