DaedalusMampheia; Wilson, Francis; Boyd Leslie; Simkins, Charles Ramphele · First published 2001Open the Tome
Structural unemployment in Southern AfricaCharles Simkins, Duncan Clarke · First published 1978Open the Tome
Effect of Various Rates, Times of Application and Combinations of Fertilizers on the Yield, Quality and Plant Characteristics of Pawnee Wheat at Various Locations in Kansas, 1947-48Charles Abraham Simkins · First published 1950Open the Tome
