Irhad Abbas Bin Ahmad Floor cleaning machine Irhad Abbas Bin Ahmad...[et.al]. - Perak Politeknik Ungku Omar (PUO) 2007 - xii, 50p. col.ill. 30cm. ISBN: DKMJUL2007 Subjects--Topical Terms: Electric apparatus and appliancesTechnology and engineering--MachineryVacuum cleaners