00420nam a2200169Ia 4500003000400000005001700004008004100021020001800062040000700080041000800087082001700095100002200112245004800134260004000182300001500222365001300237OSt20230508094520.0210423s2012 xx 000 0 und d a9788173710179 cAL aeng a530 VENG223 aVENKATARAMAN (G). aVignettes in physics: Saha and his formula. aNew DelhibUniversities Pressc2012 aix,194bPB b195cINR