printed viewing materials
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2.
3.
4.
online viewing materials
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2.
3.
4.
Share
printed viewing materials
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2.
3.
4.
online viewing materials
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2.
3.
4.
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Answer:
p.v.m
1.textbooks
2.workbooks
3.newspapers
4.reference books
o.v.m
1.photographs
2.video films and cinema
3.video tapes
4.designs