Official document
Government Printer. Eastern Region
[Ministry of Economic Development]
Government Printer 1975 Official document 1975, no. 5
所蔵館1館
South-Eastern State of Nigeria 1974 Official document no. 5 of 1974
[Govt. printed] [1971] Official document no. 7 of 1971
Govt, Printer] 1964 Official document no. 6 of 1964
by J. D. Kingsley
Printed by the Government Printer [1961] Official document no.7 of 1961