High-density apple orchards-planning, training and pruning
Heinicke, D.R.
High-density apple orchards-planning, training and pruning - Washington 1975 - 34 p. - No. 458; United States Departm .
634.11
High-density apple orchards-planning, training and pruning - Washington 1975 - 34 p. - No. 458; United States Departm .
634.11