TY  - BOOK
AU  - Roger Knowles
AU  -  T. Henry Blackburn, 
TI  - Nitrogen isotope techniques
SN  - 0-12-416965-1
U1  - 589.95 
PY  - 1993///
CY  - London
PB  - Academic Press Inc
N1  - Roger Knowles & T. Henry Blackburn: Nitrogen isotope techniques.  London.  Academic Press Inc, 1993. 0-12-416965-1--(589.95KNO)
ER  -