S L 2020 Laser Challenge

1990 • 1,410 Readers • 432 pages • 4.2

2001 • 46 Readers • 565 pages • 3.5

2015 • 4 Readers • 4.7

2019 • 189 Readers • 356 pages • 3.9

2015 • 4 Readers • 5

2017 • 165 Readers • 304 pages • 3.3

2019 • 1,578 Readers • 3.9

2017 • 1,809 Readers • 176 pages • 4.1

2020 • 210 Readers • 336 pages • 4.1

2018 • 900 Readers • 160 pages • 4.2

2014 • 510 Readers • 461 pages • 4

2018 • 670 Readers • 172 pages • 4.3

2018 • 744 Readers • 160 pages • 4.1

2019 • 771 Readers • 464 pages • 4.2

2020 • 636 Readers • 352 pages • 4.4

2014 • 74 Readers • 199 pages • 3.6

1986 • 814 Readers • 448 pages • 4.1

2019 • 98 Readers • 391 pages • 3.8

2019 • 591 Readers • 384 pages • 4.1

2020 • 272 Readers • 470 pages • 3.5

1993 • 809 Readers • 308 pages • 4.1

2007 • 1 Reader • 704 pages • 5

30 • 2,350 Readers • 215 pages • 4.2