European potato journal v.7, (n-1), March 1964
Thaer, R., ed.
European potato journal v.7, (n-1), March 1964 - Wageningen European Association for Potato Research 1964 - 252 p.; 25cm.
European potato journal v.7, (n-1), March 1964 - Wageningen European Association for Potato Research 1964 - 252 p.; 25cm.