1
2
Published in 1992
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3
Published in 1996
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4
Published in 1992
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5
6
7
Published in 1995
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9
Published in 1993
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10
Published in 1993
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11
Published in 1994
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12
by Peralta I., Eduardo; Vásquez G., José; Mora C., Eloy; Murillo I., Angel; Pinzón Z., José; Lépiz I., Rogelio
Published in 1994
Repository