00537nam a2200205Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 0-8448-0359-6 IIA Library 535.8 HOR Horne, D. F 7238 Dividing, ruling and mask-making D. F. Horne London Adam Hilger 1974 315p. Astronomy and astrophysics thesaurus Mask-Making 8568 Optical instruments Optics BK 4813 4813 0 0 0 0 BAN BAN GEN 1976-03-15 0 535.8/ HOR 5388 2021-11-05 1976-03-15 BK £ 20.00