The railways started to spread in the second half of the nineteenth century (upper diagram) and this was accompanied by an increase in the area cultivated (lower diagram). The diagram only includes data from Argentina, but the sameanbsp;...
|Title||:||Encyclopedia of the Biosphere: Prairies and taiga|
|Author||:||Ramon Folch i Guillén, Josep Maria Camarasa|
|Publisher||:||Gale / Cengage Learning - 2000|