Evaluating changede C. A. Gray, J. G. NelsonMateriasInfluence of environmentCongressesSocial changeManEvaluationSocial conditionsEdiciones (1)Evaluating change (1978)Social Science Federation of Canada · inglésMás obras de C. A. GrayAArt in newspaper illustratingArt in newspaper illustrating1890EEvaluating change : proceedings of a symposiumEvaluating change : proceedings of a symposiumPPhoenix ProjectPhoenix Project
