Genetic engineering

1985 • 1,814 Readers • 256 pages • 4.3

2002 • 490 Readers • 376 pages • 3.9

1988 • 75 Readers • 413 pages • 4.1

2007 • 66 Readers • 405 pages • 3.5

1999 • 53 Readers • 480 pages • 3.5

1996 • 20 Readers • 640 pages • 3.2

2003 • 1 Reader • 342 pages

2013 • 1 Reader • 268 pages

2014 • 1 Reader • 166 pages • 2