TY  - BOOK
AU  - Asimov,Isaac
AU  - Walker,Robert M.
TI  - The world around you: a ladder edition at the 2,000 word level 
AV  - QD 466 A832w 1966
U1  - 546 
PY  - 1966///
CY  - New York
PB  - Lancer Books
KW  - Chemical elements
N1  - Original title: "Building Blocks of the Universe."
ER  -