1
Published [1979]
...APA 146...

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4
Published 1982]
...APA 104...

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Published [1981]
...APA 93...

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9
Published [1981?]
...APA 1377...

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10
Published [1981]
...APA 1356...

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Published 1982]
...APA 255...

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12
Published [1981]
...APA 1357...

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13
Published [1982]
...APA 1359...

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14
Published [1982]
...APA 1358...

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15
Published [1985]
...APA 2608...

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Published [1983]
...APA 2516...

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18
Published [1983]
...APA 3264...

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19
Published 1983]
...APA 253...

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20
by Plummer, James R.,
Published 1982 Mar. 31.
...APA 186...

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