00294nam a2200097Ia 4500080001900000100002100019245005600040260006500096300001600161583001900177  a17.05.01 P8675  aPotter, K. E. D.  aAn appraisal of the hydrology and climate of Guyana  bMinistry of Works, Hydraulics and SupplyaGeorgetownGYc1970  a29 p. : map  c11/17/04kJOYD