try this links
ed2k://|file|How%20to%20Solve%20It%20-%20A%20new%20aspect%20of%20mathemati
cal%20method%20-G.%20Polya.rar|819587|F946F993B2407A38CF5C303E62F3E154|/
ed2k://|file|Polya%20G.,%20Read%20R.C.%20Combinatorial%20enumeration%20of%
20groups,%20graphs%20and%20chemical%20compounds%20(Springer,%201987)(T)(15
4s)_MAc_.djvu|1270249|63CEC80C5C43366DAE5788B30602CDA3|/
ed2k://|file|Polya%20G.,%20Tarjan%20R.E.,%20Woods%20D.R.%20Notes%20on%20in
troductory%20combinatorics%20(Birkhauser,%201983)(T)(200s)_MAc_.djvu|19489
20|B8536F2677742B4028A773867928DE29|/