Perithecia of Thielavia basicola Zopf in culture and the stimulation of their production by extracts from other fungi - McCormick, Florence Anna 1874 -1964 (Connecticut Agricultural Experiment Station, 1925)

Perspectives and horizons in microbiology, a symposium - Waksman, Selman A. (Selman Abraham), 1888 -1973 (Rutgers University Press, 1955)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)