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Tuproq gigienasi Reja: 1.Tuproq gigienasining ahamiyati 2.Tuproqning ifloslanish manbalari va sanitariya holati 3.Tuproqni gigiyenik muhofaza qilish usullari Xulosa
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Reja: 1.Tuproq gigienasining ahamiyati 2.Tuproqning ifloslanish manbalari va sanitariya holati 3.Tuproqni gigiyenik muhofaza qilish usullari Xulosa
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Tuproq gigienasi Reja: 1.Tuproq gigienasining ahamiyati 2.Tuproqning ifloslanish manbalari va sanitariya holati 3.Tuproqni gigiyenik muhofaza qilish usullari Xulosa
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