00627nam a22002057a 4500 BD-DhUL 20150112091122.0 150112s1947 u a|||| |||| 001 0 eng d BD-DhUL BD-DhUL 684.4 JOO Johnson, B. K. Optics and optical instruments : an introduction with special reference to practical applications / B. K. Johnson Dover Publications : New York, c1947. vii, 224 p. : ill. ; 20 cm. GBP 13.60 Includes index. Optics. Optica. ddc BK 29627 29627 0 0 ddc 0 684_400000000000000_JOO 0 NFIC 56193 DUSL DUSL GEN 1969-06-13 684.4 JOO A59418 2015-01-12 2015-01-12 BK