تنقيح بحثك
الإتاحة
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المؤلفين
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أنواع المادة
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مواقع
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السلاسل
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مواضيع
- Data Collection
- Developing countries
- Experimental design
- Health Policy
- Health Services Rese...
- Health Services Rese...
- Human services
- Medical care
- Medical Informatics ...
- Medicine - Research ...
- Primary Health Care
- Public health
- Public health - Rese...
- Research Design
- Urban Health
- Urban Health Service...
- أظهر المزيد
- عرض أقل