"KERALA ENGG. RESEARCH INSTITUTE, PEECHI, ANNUAL REPORT 1975, PUBLICATION NO.28."
GOVT. OF KERALA
"KERALA ENGG. RESEARCH INSTITUTE, PEECHI, ANNUAL REPORT 1975, PUBLICATION NO.28." - PUBLIC WORKS DEPT. GOVT. OF KERALA
"KERALA ENGG. RESEARCH INSTITUTE, PEECHI, ANNUAL REPORT 1975, PUBLICATION NO.28." - PUBLIC WORKS DEPT. GOVT. OF KERALA