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2Published in 1998Repositorio Repositorio Digital USB
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3Published in 2001Repositorio Repositorio Digital USB
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4Published in 2003Repositorio Repositorio Digital USB
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5Published in 2000Repositorio Repositorio Digital USB
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6Published in 1986Repositorio Repositorio Digital USB
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7Published in 1999Repositorio Repositorio Digital USB
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8Published in 2001Repositorio Repositorio Digital USB
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9Published in 2000Repositorio Repositorio Digital USB
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10Published in 2002Repositorio Repositorio Digital USB
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11Published in 1999Repositorio Repositorio Digital USB
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12Published in 2002Repositorio Repositorio Digital USB
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13Published in 1999Repositorio Repositorio Digital USB
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14Published in 2003Repositorio Repositorio Digital USB
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15Published in 1987Repositorio Repositorio Digital USB
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16Published in 2001Repositorio Repositorio Digital USB
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17Published in 2006Repositorio Repositorio Digital USB
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18Por Antequera Jiménez, Dineth María; Cepeda Suárez, Heidy; González Arcos, Claudia; Vásquez Suárez., HermesPublished in 2002Repositorio Repositorio Digital USB
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19Published in 1989Repositorio Repositorio Digital USB
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20Published in 1996Repositorio Repositorio Digital USB
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