Regis, E., & 		Lagunzad, D.
(2007).
 Comparison of Pollen Abortiveness in Four Weed Species Treated with Mercuric Chloride.
<em>Science Diliman: A Journal Of Pure And Applied Sciences, 14</em>(1).
Retrieved from <a href="https://journals.upd.edu.ph/index.php/sciencediliman/article/view/164" target="_new">https://journals.upd.edu.ph/index.php/sciencediliman/article/view/164</a>