00277nam a2200109 a 450000500170000002000150001708200160003210000250004824500370007326000350011030000220014520251203091535.0  a0198571747  a128.2,bcro  aCrook, John, Hurrell  aEvolution of human consciousness  aOxford: ClareNew Delhionc1980  axvi,446p.c22 cm.