TY  - BOOK
AU  - Berger, Amelie.
TI  - Twice humanity: implications for local and global resource use 
SN  - 917106415X (pbk.)
PY  - 1998///
CY  - Stockholm
PB  - Nordiska Afrikainstitutet
KW  - Agriculture reseaches
N1  - Includes biblographical references
ER  -