“Economic Valuation of Parthenium Weed Control Measures, in Gurage Zone, SNNPR of Ethiopia”, GJSFR, vol. 18, no. D6, pp. 15–22, Sep. 2018, Accessed: Sep. 21, 2026. [Online]. Available: https://journalofscience.org/index.php/GJSFR/article/view/2355