TY  - BOOK
AU  - Kilford, W. K. 
TI  - Elementary air survey
SN  - 0-273-00156-6
U1  - 628.53 
PY  - 0000///ix, 363p. : ill
CY  - London
PB  - Pitman publishing
KW  - Air pollution - Engineering aspects
N1  - Includes bibliography and index
ER  -