How many books did Helen Keller get published?
12
3
3
2
3
2
3
2
1
3
2
1
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
5
3
0
2
1
4
5
3
2
1
6
0
4
5
3
2
1
6
4
5
0
3
2
1
6
4
5
3
0
2
1
6
4
5
3
2
1
6
0
4
5
3
7
2
1
6
4
5
0
3
7
2
1
6
4
5
0
7
2
1
6
4
5
8
7
1
6
0
4
5
8
7
1
6
4
5
0
8
7
6
4
5
8
0
7
6
4
5
8
7
6
0
5
8
7
6
5
0
8
7
6
5
8
0
7
6
5
8
7
6
0
5
8
7
6
10
9
5
8
7
6
10
9
13
8
7
6
10
9
13
8
7
10
9
13
8
7
10
9
12
13
8
7
11
10
9
12
13
8
7
11
10
9
12
13
8
ten
7
11
10
2 volumes