- CIENCIAS NATURALES
- CONSERVACION DE LA NATURALEZA 31
- PROTECCION DE LA NATURALEZA 31
- AREAS PROTEGIDAS 14
- ECOLOGIA 13
- RECURSOS NATURALES 11
- CONSERVACION DE LA FAUNA SILVESTRE 8
- PARQUES Y RESERVAS NACIONALES 7
- RESERVAS NATURALES 7
- CONSERVACION DE RECURSOS NATURALES 6
- TURISMO 6
- CONSERVACION DE ECOSISTEMAS 5
- ECOSISTEMAS 5
- ESPECIES ANIMALES EN PELIGRO DE EXTINCION 5
- PARQUES NACIONALES 4
- BIOECOLOGIA 3
- BOSQUES 3
- CIENCIAS BIOLOGICAS 3
- CONSERVACION DE ESPECIES 3
- MAMIFEROS CARNIVOROS 3
- MANEJO DE PARQUES Y RESERVAS 3
- NATURALEZA 3
- AREAS NATURALES 2
- BIODIVERSIDAD 2
- BOSQUE TROPICAL 2
- CHACAL 2
- CONSERVACION DE AREAS MARINAS 2
- CONSERVACION DE LA BIODIVERSIDAD 2
- CONSERVACION DE LA FLORA 2
- CONSERVACION DE SUELOS 2
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1
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2
Tropical forest, integrated conservation strategies and the concept of critical mass /
Published 1993Subjects: “…CONSERVACION DE BOSQUES…”
Book -
3
Second draft of world conservation strategy /
Published 1978Subjects: “…CONSERVACION DE LA NATURALEZA…”
Conference Proceeding Book -
4
What´s Wildlife Worth? : economic contributions of wild plants and animals to developing countries /
Published 1982Subjects:Book -
5
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6
World Conservation Union : anual report 1995 /
Published 1996Subjects: “…CONSERVACION DE LA NATURALEZA…”
Book -
7
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8
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9
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10
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11
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12
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13
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14
Conserving natural resources : principles and practice in a democracy /
Published 1966Subjects:Book -
15
Conserving american resources /
Published 1960Subjects: “…CONSERVACION DE RECURSOS NATURALES…”
Book -
16
Conservation of natural resources /
Published 1958Subjects: “…CONSERVACION DE RECURSOS NATURALES…”
Book -
17
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18
Caring for the earth : a strategy for survival /
Published 1993Subjects: “…CONSERVACION DE LA NATURALEZA…”
Book -
19
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20