La Agricultura Peninsular

Autor: Erik Brynjolfsson, Andrew McAfee

Autor: Jayesh Vasave, Swapnil Deshmukh, B B Ramani

Autor: unknown author, Andreas Kasprzak

Autor: Frank Thelen

Autor: Engelbert Kötter

Autor: Malcolm Godwin Hardesty

Autor: Dan Gookin

Autor: Andrew Nahum

Autor: Mathias Schüz

Autor: Alois Hüning, Rolf Reudenbach

Autor: Teresa-Marie Böhm

Autor: Ian Graham, Tom Jackson

Autor: Muhammad Ashraf Mokhrizal

Autor: Jürgen Schmidt

Autor: Udo Paulitz

Autor: Tom Scheffel, Sascha Kirchner