HOUGEN/WATSON, . (2008). CHEMICAL PROCESS PRINCIPLES VOL-I. DELHI: CBS PUBLISHER AND DISTRIBUTORS.
HOUGEN/WATSON, . 2008. CHEMICAL PROCESS PRINCIPLES VOL-I. DELHI: CBS PUBLISHER AND DISTRIBUTORS.
HOUGEN/WATSON, . CHEMICAL PROCESS PRINCIPLES VOL-I. DELHI: CBS PUBLISHER AND DISTRIBUTORS. 2008.