Discussion
Which of the following are review type of services ?
(i) CAS
(ii) Trend report
(iii) Newspaper clipping
(iv) State-of-the-art-report
Answer: A
The review-type services are trend reports and state-of-the-art reports, so the answer is (ii) and (iv).
A trend report reviews the progress of a subject over a period, and a state-of-the-art report evaluates the present position of a subject. Both digest and assess a body of literature, which is what makes a service a review service.
A current awareness service (CAS) and newspaper clipping service only alert readers to new items as they appear; they list or copy material without reviewing it, so codes including (i) or (iii) are wrong.
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