00279nam a22000857a 4500082002200000100002100022245010300043260003700146300001000183  aTNC B122x5453 Z11  aZachariah, K. C.  aDynamics of migration in kerala : bDimensions, differentials and consequencescby K. C. Zachariah  aNew DelhibOrient longman c2003  a476p.