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  1. Waterfowl of North America: Frontmatter and Preface

    Contributor(s):: Paul A. Johnsgard

    It was with a considerable degree of hesitation that, during the winter of 1970-71, I sat down and contemplated the scope and structure of a possible book on the waterfowl of North America. On my bookshelf behind me were copies of A. C. Bent's Life Histories of North American Wild Fowl, F. H....

  2. General principles of stress and well-being

    Full-text: Available

    | Contributor(s):: Temple Grandin (editor), P B Siegel, W B Gross

    At every level of biological organization, be it molecular, cellular, organismic, population or interspecies, equilibrium patterns emerge. The concept of evolutionary stable strategies in natural populations is well accepted in biological circles. Artificial selection, the foundation of livestock...