00680nam a2200217 b 4500 3228 20251003122537.0 0869541595 Paperback (pbk) MPL E 3228 ST 620 VANR van Rensburg, MJJ 196887 Engineering science N4 / M.J.J. van Rensburg, A.S. van Rooyen. Johannesburg : Macmillan, 1983. 103 pages. illustrations; 25 cm. Mactech books. Engineering - textbooks Engineering science- study & teaching, problems, exercise,etc Engineering Van rooyen, A S. ddc BOOK 367 Ellen Msibi 367 Ellen Msibi 786876 786875