Rock | Definition, Characteristics, Formation, Cycle, Classification, Types, & Facts | Britannica
Was ist Rockmusik? Rock & Roll Hall of Fame legt neue Definition fest — Rolling Stone
Chapter 4 Rocks & Igneous Rocks. Rock Definition A naturally occurring consolidated mixture of one or more minerals e.g, marble, granite, sandstone, limestone. - ppt download
ROCK Definition und Bedeutung | Collins Englisch Wörterbuch