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1
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2Published 1981“...GF 21 .H918...”
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3
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4Published 1976“...GV 721.5 .O535...”
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5
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6
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7Published 1982“...GR 336 .S6 .E27...”
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8Published 1981“...GR 335 .J86...”
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9
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10
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11Published 1988“...GN 855 .J3 .Y19...”
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12
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13
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14
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15
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16
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17
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18
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19
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20