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01672nam a220030177 4500 |
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050201e1987 es ||||grm||||||||||spa|d |
| 040 |
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|d SV-Ss USB
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| 094 |
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|a 631.41
|b V659c
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| 100 |
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|a Vielman Arévalo, Ana Deysi
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| 700 |
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|a López Eguizábal, Candelaria Mercedes
|e coaut.
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| 700 |
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|a García, Haydée
|e coaut.
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| 245 |
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|a Cuantificación de azúfre en la capa arable de 66 calicatas de suelos agrícolas de El Salvador /
|b Ana Deysi Vielman Arévalo, Candelaria Mercedes López Eguizábal, Haydée García; Asesor: Ricardo Antonio Barahona.
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| 260 |
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|a San Salvador :
|b Universidad de El Salvador,
|c 1987.
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| 300 |
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|a [13], 126 h. ;
|e 27 cm.
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| 500 |
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|a Incluye Resumen, Bibliografía, Anexos.
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| 502 |
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|a Tesis (Licenciatura en Química y Farmacia) -- Universidad de El Salvador, 1987.
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| 592 |
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|a El azufre, El sulfato.--Antecedentes: Nacionales, Internacionales.
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| 650 |
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|a AZUFRE
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| 650 |
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|a SUELOS AGRICOLAS
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| 991 |
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|a bc_mercy
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| 992 |
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|a 28/07/2006
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| 942 |
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|c BK
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| 999 |
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|c 55978
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