Hello,

I recently picked up the Queen's Gambit declined as black with a FIDE rating at 1900.

Arriving at the Catalan'ish via the QGD move order:

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. g3 

Against proper Catalan move order, I use a simple line:

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 

Is there some universal way of handling the Nf3, Nc3 and Nf3+Nc3 move order into the Catalan that is solid? Perhaps a book that would cover this? 

Thanks.