TY  - JOUR
AU  - sepehrian azar, amir
AU  - mohammadpour, afsaneh
AU  - elmi, hamed
TI  - Preparation and characterization of co hydrogel (Vinyl Pyrrolidone- Methacrylic acid) by free radical polymerization method
JO  - The Application of Chemistry in Environment
VL  - 10
IS  - 38
SP  - 0
EP  - 0
PY  - 2019
DO  - 
ER  -