Soil Acidity and LimingAndrew Robeson Whitson, Wilbert Walter Weir · First published 2023Open the Tome
Productive Soils; the Fundamentals of Successful Soil Management and Profitable Crop ProductionWilbert Walter 1882- Weir · First published 2021Open the Tome
A study of the value of crop rotation in relation to soil productivityWeir, Wilbert Walter · First published 1926Open the Tome
