The description of the main results follows the order of the questions in the questionnaire. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
It took about ten to fifteen minutes to answer each questionnaire. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
Very seldom was a refusal the result of the would-be interviewees lack of proper knowledge of what was being asked about on the questionnaire. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
。问卷。
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