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Retired from working with software. Enjoy reading a wide range of books from Elizabethan Mysteries to Science Fiction to Math and Physics materials.
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Mark Christensen's books
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Mark Christensen rated The Fifth Science Fiction MEGAPACK ®: 2 stars

The Fifth Science Fiction MEGAPACK ® by Cory Doctorow, Gardner Dozois, Walter Tevis, and 23 others
Mark Christensen rated The Pillar of Light: 3 stars
Mark Christensen rated The Truth: 3 stars

The Truth by Terry Pratchett (Discworld, Book 25)
The Truth is a fantasy novel by British writer Terry Pratchett, the twenty-fifth book in his Discworld series, published in …
Mark Christensen rated The silent barrier: 3 stars
Mark Christensen rated A Hat Full of Sky: 4 stars

A Hat Full of Sky by Terry Pratchett (Discworld, #32)
Tiffany Aching is ready to begin her apprenticeship in magic. She expects spells and magic – not chores and ill-tempered …
Mark Christensen rated Small Gods: 4 stars

Small Gods by Terry Pratchett (Discworld, #13)
A fantasy tale follows the experiences of Discworld, a flat, circular planet that travels through deep space on the backs …
Mark Christensen rated Richardson Scores Again: 3 stars

Richardson Scores Again by Basil Thomson (An Inspector Richardson mystery -- no. 2)
Richardson Scores Again was first published in 1934. This new edition, the first in many decades, includes a new introduction …
Mark Christensen rated Richardson's First Case: 3 stars
Mark Christensen rated Mort: 5 stars

Mort by Neil Gaiman, Terry Pratchett, Nigel Planer, and 2 others
Death takes on an apprentice who's an individual thinker.
Mark Christensen rated Carpe Jugulum: 3 stars

Carpe Jugulum by Terry Pratchett
Carpe Jugulum (Latin for "seize the throat", cf. Carpe diem) is a comic fantasy novel by Terry Pratchett, the twenty-third …
Mark Christensen rated The Shepherd's Crown: 4 stars

The Shepherd's Crown by Terry Pratchett
The Shepherd's Crown is a comic fantasy novel, the last book written by Terry Pratchett before his death in March …
Mark Christensen rated The Red Year: 2 stars
Mark Christensen rated Babel-17: 3 stars

Babel-17 by Samuel R. Delany
During an interstellar war one side develops a language, Babel-17, that can be used as a weapon. Learning it turns …














