http://pec.lib.wvu.edu/record/P177721944Growth and fruitfulness of two apple varieties on French crab seedlings and on a clonal rootstock.Journal article reprint from: American Society for Horticulture Science. <em>Proceedings</em>, v.44 (1944).Sudds, R. H.Apples--Yields.Apples--Growth.Stocks (Horticulture)14256