4.33 avg rating — 427 ratings

4.40 avg rating — 5 ratings

4.24 avg rating — 84 ratings

4.13 avg rating — 68 ratings

3.67 avg rating — 3 ratings

4.32 avg rating — 208 ratings

3.13 avg rating — 15 ratings

3.62 avg rating — 16 ratings

really liked it 4.00 avg rating — 7 ratings

3.71 avg rating — 7 ratings

4.58 avg rating — 12 ratings

3.44 avg rating — 18 ratings

3.91 avg rating — 22 ratings

liked it 3.00 avg rating — 3 ratings

4.16 avg rating — 25 ratings

4.60 avg rating — 5 ratings

4.33 avg rating — 3 ratings

0.00 avg rating — 0 ratings

4.40 avg rating — 10 ratings

0.00 avg rating — 0 ratings

"Probably a reprint of a formerly-classified NSA document."

4.20 avg rating — 202 ratings

3.73 avg rating — 464 ratings

3.45 avg rating — 20 ratings

liked it 3.00 avg rating — 1 rating

it was amazing 5.00 avg rating — 1 rating