25. Hillside agriculture Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
26. Hillside agriculture Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
27. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Chuschi (Peru) Date: 1996 Format: Image
28. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
29. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
30. Hillside agriculture Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
31. Hillside agriculture Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
32. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Chuschi (Peru) Date: 1996 Format: Image
33. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
34. Rio Pampas Valley approaching Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Chuschi (Peru) Pampas River Valley (Peru) Date: 2002 Format: Image
35. Rio Pampas Valley approaching Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Chuschi (Peru) Pampas River Valley (Peru) Date: 2002 Format: Image
36. Rio Pampas Valley approaching Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Chuschi (Peru) Pampas River Valley (Peru) Date: 2002 Format: Image
