Question

What is the help of textbooks in this application
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Answer 1

Answer:

you can study with textbooks yrr.......

Answer 2

Answer:

According to the OED, textbook derives from an obsolete sense of text, that is, text-hand: 1730 N. Bailey Dict. Britannicum (folio), Text-Book (in Universities) is a Classick Author written very wide by the Students, to give Room for an Interpretation dictated by the Master, &c. to be inserted in the Interlines.

Explanation:

sister tell which application