00348nam a2200121   4500008004100000100001900041245006200060260003600122300002500158650001200183650001200195050001900207710129s1971    nyua     b    001 0 eng  1 aSiegman, A. E.13aAn introduction to lasers and masersc[by] A. E. Siegman.  aNew York,bMcGraw-Hillc[c1971]  axiii, 520 p.billus. 0aLasers. 0aMasers.00aTK7871.3b.S55