Back to Activities / PhD Seminars 1oct202014:00ONLINE: Energy Efficiency and Sustainability in Twentieth Century Colombian AgricultureÁlex Urrego (Universitat de Barcelona)14:00 Activity:PhD in Economic History student seminar Event Details Event Details Online seminar Join the seminar HERE. SpeakerÁlex Urrego (Universitat de Barcelona) Time(Thursday) 14:00 Calendar GoogleCal