EFFECT OF OPTIMIZATION OF TWEEN 80 AND PROPYLENE GLYCOL AS A SURFACTANT AND COSURFACTANT ON THE PHYSICAL PROPERTIES OF ASPIRIN MICROEMULSION YATI, KORI http://repository.uhamka.ac.id/4214/1/Ijap%20Upload.pdf http://repository.uhamka.ac.id/4214/2/Peer%20review%201.pdf Silahkan Unduh Disini!