00427nam a2200157 a 450000500170000000800410001704100080005808200100006610000160007624500270009226400400011930000520015949000250021165000130023670000200024920260717090951.0260717s1973    ii            000 0 eng d  aeng04a574.41 aFarb, Peter10aEcology /cFarb, Peter 1aNew York :bTime life books,c1973.  a192 p. : ill. (some color), color maps ; 28 cm.0 aLife nature library. 4aEcology.1 aTime-Life Books