ALL LOOP N=2 STRING AMPLITUDES

Using the N = 4 topological reformulation of N = 2 strings, we compute all loop partition function for special compactifications of N = 2 st rings as a function of target moduli. We also reinterpret N = 4 topolo gical amplitudes in terms of slightly modified N = 2 topological ampli tudes. We present some preliminary evidence for the conjecture that N = 2 strings is the large N limit of Holomorphic Yang-Mills in four dim ensions.