एस.आर. रंगनाथन द्वारा शुरू की गई 'थ्री-कार्ड सिस्टम' (Three-card system) मुख्य रूप से पुस्तकालयों में किसके लिए उपयोगी है?

Examine the following statements about stock verification in libraries and identify the correct ones: i. Stock verification helps in the identification of missing documents. ii. It helps in estimating the extent of loss of documents. iii. It enables the easy calculation of overdue charges. iv. It results in the cleaning of the shelves.

Arrange the following steps involved in Automated Book Acquisition in a logical chronological order. A. Obtaining Approval B. Receiving Documents C. Document Request / Recommendation D. Preparing and Mailing orders E. Pre-order / Duplicate checking Choose the correct answer from the options given below: