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| 001 | 020425 | ||
| 005 | 20231009192442.0 | ||
| 008 | 070413t19831983---D----------000-u-spa-u | ||
| 020 | _a968-597394-6 | ||
| 082 | 0 | _a338.972 OSW | |
| 100 | 1 | _aOswald S., Ursula | |
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_aPiedras en el surco _c/ Ursula Oswald S. |
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_aMexico _b: Universidad Autonoma Metropolitana/ Unidad Xochimilco _c, c1983. |
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_a237p. pb. _b: tbs. |
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| 440 | 0 | _aColeccion Ensayos | |
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_aAgricultura _x-Aspectos Economicos _z-Mexico |
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_aCampesinos _x--Aspectos Politicos _z--Mexico |
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