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1by Combs, Arthur W. (Arthur Wright), 1912-1999Subjects: “...Helping behavior....”
Published 1978
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8Subjects: “...Helping behavior....”
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9Published 1981Subjects: “...Helping behavior....”
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11Published 2022Subjects: “...Helping behavior....”
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12by Hoffman, August JohnSubjects: “...Helping behavior....”
Published 2021
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13Published 1999Subjects: “...Helping behavior....”
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14Published 2001Subjects: “...Helping behavior....”
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