00305nam a2200109Ia 4500008004100000082001500041100001900056245006200075250000800137260003800145300001200183190709s9999    xx            000 0 und d  a371.42 C85  aCrow, lester D 0aIntroduction to guidance : basic principles and practices  a2nd  aNew YorkbAmerican Book Co.c1960  axiv,463