Facts On File Inc Sivumäärä: 207 sivua Asu: Kovakantinen kirja Julkaisuvuosi: 2007, 30.09.2007 (lisätietoa) Kieli: Englanti
Without the crucial resources of water and atmosphere, life would not be possible on Earth. Because of this, it is critical that they be managed and cared for. This work focuses on issues that affect us.