How many books did Jack London have published?
50
3
3
3
3
2
3
2
3
2
3
4
2
3
4
2
3
6
4
2
3
6
4
2
3
7
6
4
2
3
1
7
6
5
8
4
2
3
1
7
6
5
8
4
2
3
0
1
7
6
5
8
4
2
3
1
7
6
5
8
0
4
2
3
1
7
6
5
8
4
2
0
3
1
7
6
5
8
4
2
3
0
10
1
7
6
5
8
4
2
3
10
1
7
6
5
8
0
4
2
13
3
10
1
7
6
5
8
4
2
0
13
10
12
1
7
6
5
8
4
2
13
0
10
12
1
7
6
5
8
9
4
2
13
10
12
1
7
6
5
8
0
9
11
4
14
2
13
ten
10
12
1
7
6
5
8
9
11
4
14
0
13
121
ten
10
12
1
7
6
5
8
9
11
4
14
13
62
0
10
12
1
7
121
6
5
109
8
9
ten
11
4
14
69
13
117
10
12
1
7
6
62