Peter J. Gregory

Science and the Garden: The Scientific Basis of Horticultural Practice

2016 · ENGLISH · PDF

View details →

Soil Conditions and Plant Growth

2013 · ENGLISH · PDF

View details →

Science and the Garden: The Scienific Basis of Horticultural Practice

2002 · ENGLISH · PDF

View details →

Plant Roots. Their Growth, Activity and Interaction With Soils

2006 · ENGLISH · PDF

View details →