TY  - ADVS
AU  - Cameron,Nell
TI  - Biological nitrogen fixation
PY  - 0000///[n.d.]
CY  - England
PB  - The Open University Enterprises LTD
KW  - Nitrogen
KW  - Fixation
N1  - Copy available in DVD format; Editor, Rill Stillman; Speakers: Colin Walker, Andy John Ston
ER  -