00309nam a2200109 a 450000500170000008200160001710000150003324500660004826000480011430000230016263000140018520251202164229.0  a339.46bHIL  aPolly Hill  aPopulation, prosperity and poverty : rural Kano 1900 and 1970  aCambridgebCambridge University Pressc1977  a240 p.c24 cm.cHB  aEconomics