General Centificate of Secondary Education & Suffolk. County Council. Co-ordinated science lesson notes: Chemistry. Collins Educational.
Chicago-viite (17. p.)General Centificate of Secondary Education ja Suffolk. County Council. Co-ordinated Science Lesson Notes: Chemistry. London: Collins Educational.
MLA-viite (9. p.)General Centificate of Secondary Education ja Suffolk. County Council. Co-ordinated Science Lesson Notes: Chemistry. Collins Educational.
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