پی‌اچ خاک (Persian Wikipedia)

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

refsWebsite

Global rank Persian rank

1web.archive.org

1^st place

1^st place

438^th place

633^rd place

usda.gov

nrcs.usda.gov

Soil Survey Division Staff. "Soil survey manual. 1993. Chapter 3". Soil Conservation Service. U.S. Department of Agriculture Handbook 18. Archived from the original on 7 November 2017. Retrieved 2017-05-15.

web.archive.org

Soil Survey Division Staff. "Soil survey manual. 1993. Chapter 3". Soil Conservation Service. U.S. Department of Agriculture Handbook 18. Archived from the original on 7 November 2017. Retrieved 2017-05-15.