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121
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122
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123
Pilot self-instructional modules for population program professionals project technical report.
Gepubliceerd in 1977Boek -
124
Languange problems in demographic field work in Africa the case of the Cameroon fertility survey.
Gepubliceerd in 1977Boek -
125
A multi-purpose household questionnaire basic economic and demographic modules
Gepubliceerd in 1977Boek -
126
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127
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128
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129
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130
Survey methods, based on periodically repeated interviews, aimed at determining demographic rates
Gepubliceerd in 1973Boek