Nitrogen fixing and multipurpose tree species for afforestation /
edited by M P Singh et al. .
- New Delhi : Today and Tomorrows Printers and Publishers , 1991.
- 306p. : ills diagrams ; 24cm .
- Recent researches in ecology,enviroment and pollution-7, NULL NULL; .
- Recent researches in ecology,enviroment and pollution-7, NULL NULL; .