Ballpoint pen (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ballpoint pen" in English language version.

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airspacemag.com

asme.org

bhl.org.uy

bicfightforyourwrite.com

bicworld.com

birodrawing.co.uk

books.google.com

doi.org

elpunt.cat

admin.elpunt.cat

encyclopedia.com

esa.int

express.co.uk

fundinguniverse.com

google.com.ar

guinnessworldrecords.com

herend.com

howstuffworks.com

science.howstuffworks.com

home.howstuffworks.com

iso.org

japantimes.co.jp

jetpens.com

metro.co.uk

moma.org

nepjol.info

nytimes.com

oxfordreference.com

patents.google.com

spacepen.com

thehelpingtech.in

thoughtco.com

  • Bellis, Mary (15 April 2017). "How Laszlo Biro Changed the History of Ballpoint Pens". Thoughtco.com. Archived from the original on 18 April 2019. Retrieved 22 December 2017.

unsharpen.com

washingtonpost.com

web.archive.org

wellappointeddesk.com

winnipegfreepress.com

worldcat.org