00406nam a2200145Ia 450000500170000000800410001708200190005810000220007724500430009926000460014230000140018865000340020294200070023699900170024320240821151544.0240821s9999||||xx |||||||||||||| ||und||  a016.1 MAH(R-B)  aMahler, Walter R. 0aTwenty years of merit rating 1926-1946  aNew YorkbPsychological Corporationc1947  aviii, 73p  aBibliographies and catalogues  cBK  c31553d31553