By Polunin, Oleg, Smythies, B.E.
By Vaughan, J.G., Geissler, Catherine, Nicholson, B.E., Dowle, Elisabeth, Rice, Elizabeth, Bellamy, David
By Coates, B.E., etc., Johnston, R. J., Knox, P. L.
By Clapham, A. R., Nicholson, B.E.
By Hill, B.E., Ingersent, K. A.
By Brightman, Frank H., Nicholson, B.E.
By Great Britain: Overseas Development Administration, Cracknell, B.E.
