Nyocha nke Ngwaahịa Osisi
I. General Inusoro nke osisi Ngwaahịa
II.Ụkpụrụ nyocha na ihe achọrọ nke ngwá ụlọ osisi
III.Ọkọlọtọ na nleba anya nke ụlọ osisi osisi
IV.Standardkpụrụ nyocha ngwaike
V. KatọnStandardkpụrụ nyocha
VI.Nkọwa zuru ezu nke ntụpọ osisi osisi
Dee ozi gị ebe a ziga anyị ya