2019 Discovery Education Science Techbook California Grade 7 Volume 2: Unit 3: Shaping Earth's Resources and Ecosystems & Unit 4: Sustaining Ecosystems -- Teacher Edition (Spiral-Bound)(12"x10.6"x1") by Amy Gensemer, David Marsland, & Nikki Snyder ***ISBN-13: 9781682206164 ***Condition: Good Used ***329 Pages @eng26flrB;1g>hmh.sci ASKU#x010925v