John Charles Walker

6 books • 2 series

Nov 5, 2018
Cover of Seed Treatment and Rainfall in Relation to the Control of Cabbage Black-Leg (Classic Reprint)

Seed Treatment and Rainfall in Relation to the Control of Cabbage Black-Leg (Classic Reprint)

May 22, 2018
Cover of Observations on the Cultivation and Diseases of Cabbage and Onions in Europe, 1922 (Classic Reprint)

Observations on the Cultivation and Diseases of Cabbage and Onions in Europe, 1922 (Classic Reprint)

May 4, 2018
Cover of Yellows-Resistant Varieties of Cabbage in the Early and Midseason Roundhead Groups (Classic Reprint)

Yellows-Resistant Varieties of Cabbage in the Early and Midseason Roundhead Groups (Classic Reprint)

Nov 13, 2011
Cover of Onion Smudge...

Onion Smudge...

Jan 1, 2010
Cover of Learning to Labour in Post-Soviet Russia

Learning to Labour in Post-Soviet Russia (BASEES/Routledge Series on Russian and East European Studies)

Dec 1, 1968
Cover of Plant Pathology

Plant Pathology (Agricultural Science S.)