TY  - BOOK
AU  - Dumond,D.E.
TI  - Swidden agriculture and the rise of Maya civilization
KW  - AGRICULTURA
KW  - MAYAS
KW  - CIVILIZACIÓN MAYA-AGRICULTURA
N2  - It is a commonplace to assert that one precondition for the rise of civilization is a degree of efficiency in the production of foodstuffs, wheter stated in terms of economic surplus or of the harnessing of energy
UR  - https://drive.google.com/file/d/1zxQO7Y2O7-fOu34Z4WHNg02ATnPsGDBE/view?usp=drivesdk
ER  -