en

Salesmanship and business efficiency

James Samuel Knox · 1912

406 pages · ~10h read

business · marketing

en

Salesmanship And Personal Efficiency

James Samuel Knox · 1919

448 pages · ~11h read

business · marketing

en

Personal efficiency

James Samuel Knox · 1919

254 pages · ~6h read

self-help

en

The Science and art of selling

James Samuel Knox · 1921

380 pages · ~10h read

business · marketing