Selection, propagation and growth of holly - Zimmerman, P. W.; Hitchcock, A. E. (Boyce Thompson Institute for Plant Research, 1933)
"Reprinted from the Florists exchange and horticultural trade world, vol. lxxxi, no. 21...Sept. 30 1933 and no. 22 ... Oct. 7 1933."
Includes bibliographical references (p. 260)