1. Hillside agriculture, Mantaro Valley near Pampas Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Pampas River Valley (Peru) Date: 1967 Format: Image
4. Plowing Collection: Billie Jean Isbell Andean Collection Location: Chuschi (Peru) Date: 1967 Format: Image
6. Vilca family planting Collection: Billie Jean Isbell Andean Collection Location: Chuschi (Peru) Date: 1969 Format: Image
7. Plowing fields Collection: Billie Jean Isbell Andean Collection Location: Chuschi (Peru) Date: 1975 Format: Image
8. Killay Belen, threshing wheat Collection: Billie Jean Isbell Andean Collection Location: Killay Belen (Bolivia) Date: 1981 Format: Image
9. Hillside agriculture, Imbabura Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Imbabura (Ecuador) Date: 1981 Format: Image
10. Hillside agriculture, Imbabura Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Valley Location: Imbabura (Ecuador) Date: 1981 Format: Image