HumanpowerRoger B. Yepsen1992·96 pages·about 1–2 hours·1 edition1992first published1992Macmillan · 96 pages · ENGISBN 9780027936155Playful·Whimsical·Short readAdd to Library▾Your copyDescribes and provides the history for a variety of vehicles that run on human muscle power.More about this bookWorth knowingWritten forMiddle gradeHow do you feel?PickReport a problem with this book