Type 639 research ship (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Type 639 research ship" in English language version.

refsWebsite

Global rank English rank

2andrewerickson.com

low place

low place

237^th place

170^th place

1,930^th place

1,143^rd place

1web.archive.org

1^st place

1^st place

low place

low place

andrewerickson.com

"PLANS recognition guide 2018". July 16, 2018.
"PLANS recognition guide 2020". February 19, 2020.

haijun360.com

"Type 639". Archived from the original on 2014-08-12. Retrieved 2014-05-28.

navy.mil

oni.navy.mil

"PLANS recognition guide 2019". February 19, 2020.

usni.org

news.usni.org

"PLANS recognition guide 2015". August 7, 2015.

web.archive.org

"Type 639". Archived from the original on 2014-08-12. Retrieved 2014-05-28.