Science · Book Selection Principles
'न्यूनतम लागत पर अधिकतम संख्या के लिए सर्वोत्तम पठन सामग्री' - यह सिद्धांत किसके द्वारा दिया गया था?
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- 1मेल्विल डेवी✓
- 2डॉ. एस. आर. रंगनाथन
- 3एल. आर. मैककोल्विन
- 4फ्रांसिस ड्रूरी
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