Ministry of Women and Child Development, Government of India vide memmorandum No. WW-20/1/2015-WW dated 12/05/2026, published revised hand book on Sexual Harassment of Women at workplace.

A handbook on the Environment Protection Act 1986 (Malayalam) - Prepared by Sri.C.S.Santhosh, Audit Officer (Rtd), Kerala State Audit Department.

A handbook on Office Waste Disposal (Malayalam) - Prepared by Sri.C.S.Santhosh, Audit Officer (Rtd), Kerala State Audit Department.

A handbook on Accredited Agencies and Public Works (Malayalam) - Prepared by Sri.C.S.Santhosh, Audit Officer (Rtd), Kerala State Audit Department.

A handbook on GST and TDS (Malayalam) - Prepared by Sri.C.S.Santhosh, Audit Officer (Rtd), Kerala State Audit Department.

A handbook on Kerala Stamp Act 1959 (Malayalam) - Prepared by Sri.C.S.Santhosh, Audit Officer (Rtd), Kerala State Audit Department.

A Handbook on Income Tax TDS and TCS (2nd Version) - Prepared by Sri.C.S.Santhosh, Audit Officer (Rtd), Kerala State Audit Department

A hand book on Store Purchase manual 2013 (VIIth Version) incorporating amendment up to 15/09/2024 - Prepared by C S Santhosh, Audit Officer (Rtd), Kerala State Audit Department