Buckwheat Crepes with Smoked Salmon and Crème Fraîche

1/2 cup all-purpose flour 

1/2 cup buckwheat flour 

1/2 tsp. salt 

2 eggs 

3/4 cup milk 

3/4 cup water 

1 Tbs. canola or corn oil 

1/2 lb. thinly sliced smoked salmon 

1 cup crème fraîche  

Freshly ground pepper, to taste 

Snipped fresh chives for garnish