Duncan, Tom IGCSE physics / Tom Duncan, Heather Kennett. - 3rd ed. - London : Hodder Murray 2014 ISBN: 9781444176421 LC Class. No.: QC47 .G7 D86 2014 Dewey Class. No.: QC47 .G7 D86 2014 National Library of Medicine Call No.: QC47 .G7 D86 2014