Parrott, Percival J.2014-11-242014-11-242014-11-24https://hdl.handle.net/1813/38185Single leaf, description for spraying apple orchards for blister-mite and casebearers. Undated, circa 1900.en-USAgricultureScienceAppleIPMInsectPestChemicalSprayNYSAESPomologyother