Pruning mature pear trees in commercial orchardsRobert L. Stebbins · First published 1992Open the Tome
Choosing pear rootstocks for the Pacific NorthwestRobert L. Stebbins · First published 1989Open the Tome
Using leaf analysis to diagnose nutrient disorders in tree fruits and small fruitsRobert L. Stebbins · First published 1988Open the Tome
Growing tree fruits and nuts in the home orchardRobert L. Stebbins · First published 1982Open the Tome
Pruning to restore an old, neglected apple treeRobert L. Stebbins · First published 1980Open the Tome
Training and pruning sweet cherry trees for mechanical harvestingRobert L. Stebbins · First published 1973Open the Tome
The concept of plant analysis and how to take a leaf sampleRobert L. Stebbins · First published 1972Open the Tome
Elements of zoologyTracy Irwin Storer, Robert L. Usinger, James Willard Nybakken, Robert C. Stebbins · First published 1955Open the Tome
