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101
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102
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103Published 1972Subjects: “...Human ecology Congresses....”
Conference Proceeding Book -
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105
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107
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108
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109
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110
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111Published 1984Subjects: “...Human ecology....”
Book -
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115
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116by Jackson, W. A. Douglas (William Arthur Douglas), 1923-Subjects: “...Human ecology....”
Published 1979
Book -
117Published 1977Subjects: “...Human ecology....”
Book -
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