00650nam a2200217Ia 4500003000900000008004100009020001800050040001600068080001500084100002200099245005000121260003000171300001000201650004100211650002200252650002400274650001100298942000700309999001500316952010100331IN-BaIIA211028s9999 xx 000 0 eng d a0-8448-0359-6 cIIA Library a535.8bHOR aHorne, D. F97238 0aDividing, ruling and mask-makingcD. F. Horne aLondonbAdam Hilgerc1974 a315p. aAstronomy and astrophysics thesaurus aMask-Making98568 aOptical instruments aOptics cBK c4813d4813 00104070aBANbBANcGENd1976-03-15l0o535.8/ HORp5388r2021-11-05w1976-03-15yBKG£ 20.00