COMARING MANY SAMPLING PROCEDURES IN DETERMINING THE SPECIFIC GRAVITY OF Populus nigra L.GROWN IN NINEVAH PLANTATARTION. Mesopotamia Journal of Agriculture, [S. l.], v. 36, n. 4, p. 170–174, 2008. DOI: 10.33899/magrj.2008.27336. Disponível em: https://magrj.uomosul.edu.iq/index.php/magrj/article/view/57685. Acesso em: 30 sep. 2026.