TY  - GEN
AU  - Eastaway Robert
AU  - Wyndham Jeremy
TI  - Why do buses come in threes? : : the hidden mathematics of everyday life / 
SN  - 186105162X
AV  - QA93 
PY  - 1999///
CY  - London : 
PB  - Robson Books, 
KW  - Mathematics
KW  - Popular works
N1  - Includes bibliographical references (p. 153-154) and index
ER  -