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Lua i Stíl Chicago (17ú heag.)Katz, Philip O. Curbside Consultation in GERD: 49 Clinical Questions. Thorofare, NJ: SLACK, 2008.
Lua MLA (9ú heag.)Katz, Philip O. Curbside Consultation in GERD: 49 Clinical Questions. SLACK, 2008.
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