61. Cornell Raised Fields Project Collection: Billie Jean Isbell Andean Collection Location: Titicaca Lake Region (Peru and Bolivia) Bolivian altiplano Date: 1994 Format: Image
62. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Chuschi (Peru) Date: 1996 Format: Image
63. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
64. Chuschi Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
65. Cancha Cancha Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image
70. Hillside agriculture Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Date: 1996 Format: Image