A study of the effect of two levels of nitrogen on the growth of you ng apple trees under grass and under arable conditions /
J. Dancer.
- Ashford, Kent : Wye College, 1963.
- 66-73 p. : ill. ; 25 cm.
- Reprint ; no. 230 .
Reprinted from Horticulture Research. Vol. 2., no. 2. pp. 65-73, 196 3.