Habibullah, P. Dr.
Ventilation pollution-hazards of depletion of ozone layer by CFC,s of refrigerants - Karachi PSC 1991 - xi, 72p.
eng
Pollution
Ventilatation
363.73 / HAV
Ventilation pollution-hazards of depletion of ozone layer by CFC,s of refrigerants - Karachi PSC 1991 - xi, 72p.
eng
Pollution
Ventilatation
363.73 / HAV