Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sale! P2P collaboration: The disadvantages of P2P (peer-to-peer) collaboration, PAL (Peer Assisted Learning) and PL (Peer Learning). $2.99 Original price was: $2.99.$1.99Current price is: $1.99. Add to cart