Chris Hartjes

7 books

68 pages digital

45 pages 2015

informative fast-paced

60 pages digital 2012

nonfiction informative slow-paced

152 pages paperback

nonfiction computer science

missing page info 2016

nonfiction informative slow-paced

66 pages 2014

informative medium-paced

87 pages paperback 2013

nonfiction informative lighthearted slow-paced