00953nam a22002537a 4500 20120111114018.0 8121933277 99.00 9788121933278 99.00 Pub 621.8078 22 Richards, Jon, 1970- 38870 Forces & simple machines / Jon Richards. Forces and simple machines Rudrapur : Nirja Publisher & Distributors 2010. Rudra Pur 32 p. : col. ill. ; 29 cm. (Pbk) Science factory 38871 Includes index. Simple machines Juvenile literature. 38872 Table of contents only ddc EN 621.8078 FOR 60694 60694 0 0 0 -1 NFIC AG AG 2012-01-11 99.00 0 621.8078 FOR 2012-01-11 00:00:00 99.00 2012-01-11 EN