OPERATION RESEARCH PDF NOTES DOWNLOAD (GGSIPU,MDU,DU)

OPERATION RESEARCH PDF NOTES FOR GGSIPU, B.TECH (MAE-6TH SEM) 
BY MD. EHSAN ASGAR (ASSISTANT PROFESSOR, HMRITM)


METROLOGY NOTES FOR GGSIPU & B.TECH STUDENTS(Mechanical and Automation) PDF