Science · Reference Services
पुस्तकालयों में रेफरल सेवाएं (Referral Services) प्रदान करने के लिए निम्नलिखित में से कौन सा एक महत्वपूर्ण उपकरण है?
- 1पंचांग (Almanac)
- 2वार्षिकी (Yearbook)
- 3विश्वकोश (Encyclopedia)
- 4संघ सूची (Union Catalogue)✓
सही उत्तर देखें
संघ सूची (Union Catalogue)
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