Sutermeister, H. M. (1955). Das Problem des einzigen Kindes. GBS-Verl.
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Tohutoru Kātū Chicago (17th ed.)
Sutermeister, Hans Martin. Das Problem Des Einzigen Kindes. Schwarzenburg: GBS-Verl, 1955.
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Tohutoro MLA (9th ed.)
Sutermeister, Hans Martin. Das Problem Des Einzigen Kindes. GBS-Verl, 1955.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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