TY  - BOOK
AU  - ELLSE MARK
AU  - ELLSE MARK
TI  - WAVES AND OUR UNIVERSE
SN  - 978-0-74877665-8
AV  - QC 23.2 .E47 2003 098884
PY  - 2001///
CY  - UNITED KINGDOM
PB  - NELSON THORNES LTD
KW  - PHYSICS
N1  - IT HAS PRACTICE QUESTIONS AND AN INDEX
ER  -