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|a RELAP02271
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|a AR-LpUBP
|b spa
|c AR-LpUBP
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| 710 |
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|a Unión Panamericana.
|b Departamento de Asuntos Culturales.
|b Sección Ciencia y Tecnología
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|a Ciencia y tecnología
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| 260 |
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|a Washington :
|b Unión Panamericana. Departamento de Asuntos Culturales. Sección Ciencia y Tecnología
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| 300 |
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|a v.
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| 942 |
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|c PP
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| 866 |
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|6 952-1
|a 1952 2(4-6); 1954 5(12); 1956 6(22)
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| 952 |
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|0 0
|1 0
|4 0
|6 REV_EXT_1178
|7 1
|9 267937
|a DUN
|b DUN
|c HE
|d 2025-05-09
|l 0
|o Rev. ext. 1178
|p PP02271
|r 2025-05-09 14:58:23
|w 2025-05-09
|y PP
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| 999 |
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|c 187042
|d 187042
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| 988 |
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|b CLI CLI
|d CLI CLI
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