Raghob boal, the book offered to Environment Management department, Indian Institute of Business Management ( IISWBM)from where I passed and professirs, coirdinators, clarks,security guards and peons , registrar till now who made my academic spirit. Ei lekhoker pathok o pathok pathikar lekhoni dhorar jonyo utsah mathro. Ei kalponik rochonar sathe kono bastob choritra o ghotonar sathe miler jonyo lekhok o bhashyokar