TY  - GEN
TY  - GEN
T1  - The economics of progress
A1  - Robertson, J. M.
LA  - eng
PP  - New York
PB  - E. P. Dutton
YR  - 1918
UL  - https://kansalliskirjasto.finna.fi/Record/fikka.1540351
OP  - 298
KW  - Economics.
KW  - Population.
KW  - Progress.
ER  -