00301nam a2200121Ia 4500008004100000040001600041041001200057082001600069100001900085245002800104260003200132300001500164230917s9999||||xx |||||||||||||| ||und||  e61551aMAIN  aEnglish  a331.11 L56E  aLerner, Abba P 0aEconomics of employment  aNew YorkbMcGraw-Hillc1951  axv, 347 p.