A T-duality approach to the gravitational wave and the Kaluza-Klein monopole

We present a world volume action for the gravitational wave and the (bosoni c) N = 1 Heterotic Kaluza-Klein monopole solution. In the construction of t he action we make use of the fact that the wave and the Kaluza-Klein monopo le are T-dual to the fundamental string and the solitonic five-brane, and w e present an alternative way to derive the T-duality rules for non-string-l ike objects.