@Abrahami and DinosaursLoveExistence: I'm looking for information about John Ellwood Jackson, author of "Biology of Apples and Pears". May you please help me?
John Jackson has a wealth of experience in the science of fruit growing. He held senior positions at East Malling Research Station and was chairman of the Orchard and Plantation Systems (High Density Planting) working group of the International Society for Horticultural Science for many years. Recently he was in charge of the Horticultural Research Centre, Marondera, Zimbabwe. He has visited fruit growing areas and lectured to fruit growers and scientists in 15 countries, spanning four continents. He has published extensively in the primary literature and has contributed to, edited or co-edited numerous volumes on various aspects of fruit trees and plantation systems.
--Kopiersperre (talk) 17:16, 14 December 2015 (UTC)