Saravanan Raj, and Jyoti Todd (2018). Soil Testing Unit-IDEAL AGRI SEARCH – Soil Testing Venture,
Case Study 4, Vol 1, Good Practices in Agricultural Extension and Advisory Services with
Agripreneurship, MANAGE, Hyderabad, India. https://www.manage.gov.in/publications/goodpractices/CaseStudy4_Feb2018.pdf