TY  - BOOK
AU  - Blackburn,T.Henry
AU  - Knowles,Roger
TI  - Nitrogen isotope techniques
T2  - Isotopic techniques in plant, soil, and aquatic biology
SN  - 0124169651
U1  - 581.19214 
PY  - 1993///
CY  - San Diego, CA
PB  - Academic Press, 
KW  - CICLO DEL NITROGENO
KW  - INVESTIGACIONES
KW  - METODOLOGIA
KW  - ESPECTROMETRIA DE MASAS
KW  - FIJACION DEL NITROGENO
KW  - ISOTOPOS
KW  - ANALISIS
ER  -