(2004). Manganese and its compounds. WHO.
Dyfyniad Arddull ChicagoManganese and Its Compounds. Ginebra: WHO, 2004.
Dyfyniad MLAManganese and Its Compounds. WHO, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
(2004). Manganese and its compounds. WHO.
Dyfyniad Arddull ChicagoManganese and Its Compounds. Ginebra: WHO, 2004.
Dyfyniad MLAManganese and Its Compounds. WHO, 2004.