00516nam a22001577a 4500 230517b |||||||| |||| 00| 0 eng d National Science Library National Science Library R 66/69(540)(058.7) L0 Indian Engineering industries / The Engineering Association of India 10th ed. Calcutta: The Engineering Association of India, 1970 xxii, 974p. Chemical technology Industries udc REF 31514 31514 0 0 udc 0 R_66695400587_L0 0 REF 47690 NSL NSL GF/RK-24/C-9/R-5 1970-12-22 0 R 66/69(540)(058.7) L0 34197 2023-05-17 00:00:00 1970-12-22 REF