ISBN: 9781260565959 is an International Student Edition of Biology 12th Edition by Peter H Raven, George B Johnson, Kenneth A. Mason, Jonathan Losos, Tod Duncan This ISBN 9781260565959 is Textbook only. It will not come with online access code. Online Access code (should only be purchased when required by an instructor ) sold separately at ISBN 9781260494655 The content of of this title on all formats are the same. The Raven & Johnson's Biology author team is committed to continually improving the text, keeping the student and learning foremost. The integrated pedagogical features expand the students' learning process and enhance their learning experience. This latest edition of the text maintains the clear, accessible, and engaging writing style of past editions with the solid framework of pedagogy that highlights an emphasis on evolution and scientific inquiry that have made this a leading textbook for students majoring in biology. This emphasis on the organizing power of evolution is combined with an integration of the importance of cellular, molecular biology and genomics to offer our readers a text that is student friendly and current.