Cengage Australia Sivumäärä: 16 sivua Asu: Moniviestin Julkaisuvuosi: 2006, 26.06.2006 (lisätietoa) Kieli: Englanti
If you were in Antarctica on 21 July 1983, you would have lived though the coldest day ever measured! Today, we can tell how hot or cold something is by using temperature scales made long ago.