Sayed, .. (1977). A New Approach for The Estimation of Births Under Registration Egypt: 1920-1970. test, 11(1), 44-71. doi: 10.21608/mskas.1977.416995
.H.A Sayed. "A New Approach for The Estimation of Births Under Registration Egypt: 1920-1970". test, 11, 1, 1977, 44-71. doi: 10.21608/mskas.1977.416995
Sayed, .. (1977). 'A New Approach for The Estimation of Births Under Registration Egypt: 1920-1970', test, 11(1), pp. 44-71. doi: 10.21608/mskas.1977.416995
Sayed, .. A New Approach for The Estimation of Births Under Registration Egypt: 1920-1970. test, 1977; 11(1): 44-71. doi: 10.21608/mskas.1977.416995