مداد (Persian Wikipedia)

Analysis of information sources in references of the Wikipedia article "مداد" in Persian language version.

refsWebsite

Global rank Persian rank

1^st place

low place

9,412^th place

7,933^rd place

low place

low place

1,459^th place

2,844^th place

historyofscience.com

"Historyofscience.com". Historyofscience.com. Archived from the original on 31 December 2010. Retrieved 2012-08-18.

"Graphite from the Plumbago Mine, Borrowdale, England". Department of Physics at Michigan Technological University. Retrieved 2008-03-27.^{^{[پیوند مرده]}}

Martin and Jean Norgate, Geography Department, Portsmouth University (2008). "Old Cumbria Gazetteer, black lead mine, Seathwaite". Retrieved 2008-05-19.{{cite web}}: نگهداری یادکرد:نام‌های متعدد:فهرست نویسندگان (link)

"US Patent 19783 Combination of Lead-Pencil and Eraser by L. Lipman". Patft.uspto.gov. Archived from the original on 2 May 2017. Retrieved 11-01-2010. {{cite web}}: Check date values in: |accessdate= (help)

"Who invented the pencil?". Rocket City Space Pioneers. Archived from the original on 22 February 2012. Retrieved 7 August 2013.
"Historyofscience.com". Historyofscience.com. Archived from the original on 31 December 2010. Retrieved 2012-08-18.
"US Patent 19783 Combination of Lead-Pencil and Eraser by L. Lipman". Patft.uspto.gov. Archived from the original on 2 May 2017. Retrieved 11-01-2010. {{cite web}}: Check date values in: |accessdate= (help)