* separar palavras-chave com vírgula
Melhores sites Literature 1-15:
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shmoop.com 
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2.
europepmc.org 
114,536

3.
poemhunter.com 
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4.
tenmarks.com 
98,229

5.
nepalkhabar.com 
75,697

6.
nobelprize.org 
70,100

7.
peta.org 
63,507

8.
lithub.com 
39,435

9.
nyt.com 
29,462

10.
360nobs.com 
28,918

11.
online-literature.com 
26,145

12.
mangalorean.com 
25,002

13.
thinkexist.com 
24,852

14.
thefreelibrary.com 
24,474

15.
quotationspage.com 
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