Keralabhaashayude Vikaasaparinaamangal Bhagam 1/

nork Kunjan Pillai Elamkulam
Argitaratua 1997

Keralabhashayude Vikaasaparinaamangal Part 1/

nork Kunjan Pillai Ilamkulam
Argitaratua 1997

Kerala bhasha sahithya charithram (v.7)/

nork Narayana Panicker R
Argitaratua 1951

Kerala bhasha sahithya charithram (v.1)/

nork Narayana Panicker R

Nammute bhasha/

nork E M S Namboodiripad
Argitaratua 1997

Kerala bhasha sahithya charithram (v.6)/

nork Narayana Panicker R
Argitaratua 1951

Madhyakala Kerala bhasha/

nork Karthikeyan Shornur
Argitaratua 1996

Malayala bhasha parinamam siddhanthangalum vasthutakalum/

nork Karunakaran Thirunalloor
Argitaratua 1996

Malayala bhashotpathi: vivaranatmaka suchika (origin of the Malayalam language : a descriptive bibliography )/

nork Raghunathan R
Argitaratua 1989

Kerala bhashayude vikasa parinamangal (part.1)/

nork Kunjan Pillai P N Elamkulam
Argitaratua 1997