Balakrishna, S. (1971). Family planning knowledge, attitude and practice: A sample survey in Andhra Pradesh. National Institute of Community Development.
Citace podle Chicago (17th ed.)Balakrishna, Sitamajie. Family Planning Knowledge, Attitude and Practice: A Sample Survey in Andhra Pradesh. Hyderabad: National Institute of Community Development, 1971.
Citace podle MLA (9th ed.)Balakrishna, Sitamajie. Family Planning Knowledge, Attitude and Practice: A Sample Survey in Andhra Pradesh. National Institute of Community Development, 1971.
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