00302nam a2200109Ia 450000500170000000800410001708200120005810000190007024500500008926000450013930000080018420260224041024.0260224s9999||||xx |||||||||||||| ||und||  a333 SIM  aSimmons, I.G.  4aThe ecology of natural resources 2nd edition   aLondon: Edward & Arnold Publishersc1986  a438