단행본

Keeping Clean

개인저자

Howie, Rhonda 

서명/저자사항

Keeping Clean /by Rhonda Howie 

발행사항

Seoul :Weldon Owen Education :WorldCom Inc,[2010] 

형태사항

32 p. :col. ill. photo ;24 cm 1 CD-ROM 

총서사항

Brain Bank,G2 Science ;2-7 

비통어주제어

Brain, Bank, Science, Keeping, Clean,