01136nam a2200301 i 450099100342639970753620021217150935.0961025s1991 us a b 001 0 eng d0226668304b11806631-39ule_instLE00300246ExLDip.to Biologiaeng577.8222Pimm, Stuart Leonard531144The balance of nature? :ecological issues in the conservation of species and communities /Stuart L. PimmChicago :University of Chicago Press,c1991xiii, 434 p. :ill. ;24 cmIncludes bibliographical references (p. 391-417) and indexesBiological diversity conservationBiotic communitiesEcologySpecies diversity.b1180663113-07-1118-12-02991003426399707536LE003 577.8 PIM01.01 (1991)12003000009446le003-E0.00-l- 03130.i1205491418-12-02Balance of nature?907457UNISALENTOle00301-01-96ma -engus 41