00473nam a22001577a 4500 230515b |||||||| |||| 00| 0 eng d National Science Library National Science Library R 69(058.7) M0 National directory of building industry, material & trade - 1980 New Delhi: C. C. Menon, 1980 523p. Building Materials Menon, C C (Ed.) udc DIR 30163 30163 0 0 udc 0 R_690587_M0 0 REF 45439 NSL NSL GF/Rk-24/C-2/R-6 1981-08-22 0 R 69(058.7) M0 91805 2023-05-15 00:00:00 1981-08-22 DIR