World Health Organization. Essential elements of obstetric care at first referral level.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Essential Elements of Obstetric Care at First Referral Level.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Essential Elements of Obstetric Care at First Referral Level.
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