ENGINEERING RESEARCH : SPEECH BY H.R.H. THE DUKE OF EDINBURGH. DELIVERED TO THE ENGINEERING UNIVERSITY, LIMA, PERU ON 23 FEBRUARY 1962.
DUKE OF EDINBURGH · Proceedings of the Institution of Civil Engineers · 1962
"ENGINEERING RESEARCH : SPEECH BY H.R.H. THE DUKE OF EDINBURGH. DELIVERED TO THE ENGINEERING UNIVERSITY, LIMA, PERU ON 23 FEBRUARY 1962.." Proceedings of the Institution of Civil Engineers, 22(1), pp. 9–10