Seed and potting composts : with special reference to soil sterilization / W. J. C. Lawrence and J. Newell Lawrence, William John Cooper. Newell, J., joint author. Compost. Soil disinfection. S661 .L3 1942 631.87 LAS Includes bibliography and index London : G. Allen & Unwinc, c1952 c1952 1952 Text 169 p. : eng