000 00263pam a2200121a 44500
082 _a535.2
_bB457o
100 _aBernheim, Robert
245 1 _aOPTICAL PUMPING
260 _aN. Y.
_bW. A. Benjamin
_c1965
300 _a272
964 _gCIRC
997 _a36145 C
999 _c430228
_d430228