Conrady-Erkes, Anna Babette(1)
Frederick Muller Ltd. (London)(1)
Rothamsted Experimental Station(1)
Schleifstein, Josef (1915-1992)(1)
Simpson-Michel, Ann [vermutlich](1)
United States / Department of Agriculture (Washington D. C.)(1)
United States / Department of Agriculture / Bureau of Home Economics (Washington, D.C.)(1)