S L 2018 Laser Challenge

2014 • 1,482 Readers • 208 pages • 3.7

2015 • 1,337 Readers • 305 pages • 3.6

2018 • 452 Readers • 368 pages • 4.2

2013 • 11 Readers • 378 pages • 4

1962 • 1,340 Readers • 247 pages • 3.8

2017 • 589 Readers • 560 pages • 4.3

2012 • 11 Readers • 326 pages • 4

1992 • 406 Readers • 593 pages • 3.8

1951 • 1,791 Readers • 255 pages • 4

1940 • 53 Readers • 156 pages • 3.1

2014 • 466 Readers • 4

2017 • 258 Readers • 402 pages • 3.9

2017 • 250 Readers • 351 pages • 4

2016 • 898 Readers • 299 pages • 4.1

2017 • 461 Readers • 320 pages • 4.2

2017 • 423 Readers • 282 pages • 4.3

1970 • 116 Readers • 399 pages • 3.5

2018 • 2 Readers • 4

2012 • 11 Readers • 364 pages • 4

181 • 2,458 Readers • 353 pages • 3.8

2009 • 503 Readers • 336 pages • 3.9

2001 • 331 Readers • 388 pages • 3.6

1967 • 53 Readers • 2.9