1 janv. 1959 - Irrigation system in farms
Description:
The viewpoint of economics, the increase in productivity in irrigation farming is due to capital investment into the fertility of irrigated areas. Modern irrigation systems were invented in 1959, but irrigation itself was invented in 3100 BC.*There was no date avaliable, but the year is correct*
Ajouté au bande de temps:
Date:
1 janv. 1959
Maintenaint
~ Il y a 66 ans