411 REFERENCE · Wikibooks
Pinyin/Bacteria
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Pinyin#Pinyin tone marking
Xìjūn
Category:Pinyin/Microbiology
411 REFERENCE · Wikibooks
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.