Guillain, Charlotte.

Hard or soft / Charlotte Guillain. - Chicago, Ill. : Heinemann Library, c2009 - 24 p. : col. ill. ; 18 x 21 cm. - Properties of materials .

Includes index.

Hard materials -- Soft materials -- Hard and soft materials -- Question -- Picture glossary.

ISBN: 9781432932701 (hc) 9781432932930 (pb)

LCCN: 2008055118

Subjects--Topical Terms:
Hardness
Hard materials

LC Class. No.: TA418.42 / G85 2009

Dewey Class. No.: 620.1/126