01142nam a2200265Ia 4500 TVU_7804 210423s9999 xx 000 0 und d 0060280190 9780060280192 eng 511.3 M978 Murphy, Stuart Dave's down-to-earth rock shop Stuart Murphy ; Cat Bowman Smith New York, NY HarperCollins 2000 33 p. ill. 26 cm Josh is the best collector on the block. And now he has something new to collect - rocks! Soon Josh and his best friend, Amy, have so many rocks they need to organize their collection. But how? Young collectors will be fascinated by all there is to know about rocks and about classifying - sorting and organizing objects by attributes like color, shape, or size. Grab your rock hammer and join the fun with this entertaining story by Stuart J. Murphy and lively art by Cat Bowman Smith Set theory Stuart Murphy; Cat Bowman Smith Trung tâm Học liệu Trường Đại học Trà Vinh