Book Reviews : Afghanistan's Foreign Affairs to the Mid-Twentieth Century: Relations with the USSR, Germany and Britain. Ludwig W. Aldamec. University of Arizona Press. $13 cloth. $7.95 paperback. South Africa's Foreign Policy, 1965-1970. James Barber. Oxford University Press. £4.50 (U.K.). West Africa Partitioned, Vol. I The Loaded Pause 1885-1889. John D. Hargeaves. Macmillan. £7.00. Accelerated Development in Southern Africa. Edited by John Barratt, Simon Brand, David S. Collier, Kurt Glaser. Macmillan. £7.00. Cabora Bassa. Engineering & Politics in Southern Africa. Keith Middle- mass. Weidenfeld & Nicolson. £6.95 (U.K.)