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| LEADER |
00000nam a22000002a 4500 |
| 006 |
a 000 0 |
| 008 |
991123s1946 mx 000 0 spa d |
| 035 |
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|a (Sirsi) a92268
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| 035 |
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|a (Sirsi) a92268
|
| 040 |
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|a DLC
|d UV#
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| 050 |
|
4 |
|a HC144
|b B34
|
| 082 |
|
4 |
|a 63581
|
| 100 |
1 |
|
|a Beltrán, Enrique,
|d 1903-1994
|
| 245 |
|
4 |
|a Los recursos naturales de México y su conservación
|c / Enrique Beltran ; introd. William Vogt.
|
| 260 |
|
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|a México
|b : S.E.P.,
|c 1946.
|
| 300 |
|
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|a 95 p
|c ; 20 cm.
|
| 490 |
0 |
|
|a Biblioteca Enciclopédica Popular
|v ; 106
|
| 590 |
|
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|a XBC010063581 de USBI-X: Colección Juan de la Cabada
|
| 650 |
|
4 |
|a Recursos naturales
|z México.
|
| 596 |
|
|
|a 2 17
|
| 942 |
|
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|c ESPECIAL
|
| 999 |
|
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|c 51278
|d 51278
|
