TY  - SER
AU  - Schroeder, Sissel.
TI  - Understanding variation in prehistoric agricultural productivity : : the importance of distinguishing among potential available and consumptive yields
T2  - American Antiquity ; 
PY  - 2001///
CY  - Washington-US : 
PB  - Society for American Archaeology, 
N1  - Artículo dentro de: Comments
ER  -