00436nam a22001577a 4500 230623b |||||||| |||| 00| 0 eng d National Science Library National Science Library R 620.91(73) L7 Energy source book USA: Aspen Systems Corporation, 1977 724p. Energy Source Mcrae, Alexander (Ed.) udc BK 47063 47063 0 0 udc 0 R_6209173_L7 0 71549 NSL NSL GF/Rk-14/C-24/R-6 2023-06-23 0 R 620.91(73) L7 88527 2023-06-23 00:00:00 2023-06-23 BK