TY  - GEN
AU  - Treacy,John
ED  - Symposium on fragile lands of Latin America: The search for sustainable uses
TI  - Agricultural terraces in Peru'sColca valley: Promises and problems of an ancient technology
T2  - Westview special studies in social, political, and economic development
SN  - 0813377056
N1  - bibliogr. p. 226-229
ER  -