Ikea Billy Bookcases

I have two blueish-green Billy book cases with glass doors and wooden look shelves. I have taken the doors off but I can't get the main parts of the bookcases apart without damaging them. The doors and shelves are wrapped in plastic. FREE to whoever wants to come and pick them up. First photo is what they look like right now. Second photo is just from the internet but it shows what they looked like before I took them apart, you can see the brown shelves. FREE.