00349nam a2200133Ia 4500003000400000020001500004040000800019082001400027100001600041245007800057250002000135260004500155300001500200LDD  a0195686292  cLDD  a577 B391F  aBeeby, Alan 0aFirst ecologybEcological principles and environmental issuescAlan Beeby  aSecond Ediction  aNew DelhibOxford University Pressc2006  axxiv, 318p