P. O. Guide Part I
Postal Manual Volume II
Postal Account Manual Volume - II
Postal Account Manual Volume - I
Postal Manual Volume - III
Postal Accounts Forms Part - I
Postal Accounts Forms Part - II
POSB Manual Vol. - III
POSB Manual Vol. - II
POSB Manual Vol. - I
PO IF Rules Part - II
SO Inspection Questionnaire
HO Inspection Questionnaire
BO Inspection Questionnaire
CCS (CCA) Rules - 1965