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Daly HE. Toward some operational principles of sustainable development. Ecological Economics. 1990;2(1):16.
Woese C. R., Yang D., Mandelco L., Stetter K. O. (1990). The flexibacter-flavobacter connection. Syst. Appl. Microbiol. 13, 161165.
Barcina I, Gonzalez JM, Iriberri J, Egea L. Survival strategy of E. coli and Enterococcus faecalis in illuminated fresh and marine systems. J. Appl. Bacteriol. 1990;68:189198.
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Ward DM, Weller R, Bateson MM. 16S rRNA sequences reveal numerous uncultured microorganisms in a natural community. Nature. 1990;345:6365.
Joshi, S. C. and Tandon, P. 1990. Isolation and maintenance normal leaf and mite?incited leaf gall tissues of Cinnamomum tamala in culture. Indian Journal of Experimental Biology 28: 838?841.
Kumar, A. and Tandon, P. 1990. Investigation on in vitro laticifer differentiation in Thevetia peruviana L. Phytomorphology 40 (1-2): 113?117.
Kumaria, S., Chrungoo, N. K. and Tandon, P. 1990. Activities of some oxidative enzymes in axenic cultures of protocorms of Cymbidium giganteum Wall. as influenced by different growth regulators. Journal of Orchid Society of India 4 (1-2): 37-44.
Michael, R. G., Tripathi, R. S., Tiwari, B. K., Mishra, S. K. and Barik, S. K. 1990. Social forestry in north-east India. National Afforestation and Eco-Development Board, Ministry of Environment and Forests, Govt. of India. 111 pp.
Misra, A. K. and Barma, S. R. 1990. Influence of rye univalents on pollen sterility and kernel setting in hexaploid triticale (X Triticosecale Wittmack). Biojournal 2 (2): 267-270.
Pandey, H. N. and Singh, R. N. 1990. Nitrogen storage and cycling in early successional stages of a grassland community at Varanasi, India. Tropical Ecology 31: 75?81.
Rao, P., Barik, S. K., Pandey, H. N. and Tripathi, R. S. 1990. Community composition and tree population structure in a subtropical broad-leaved forest along a disturbance gradient. Vegetatio 88: 151-162.
Sharma, S. K. and Tandon, P. 1990. Asymbiotic germination and seedling growth of Cymbidium elegans Lindl. and Coelogyne punctulata Lindl. as influenced by different carbon sources. Journal of Orchid Society of India 4 (1-2): 149?159.

Singh, R. K., Singh, A., Misra, A. K., Khanuja, S. P. S., Narula, R. and Kumar, S. 1990. Binary conjugational transfer system of vector pRK290 and pLAFRI is proficient both ways between Escherichia coli and Rhizobium, Indian Journal of Experimental Biology 28 (10): 994-995.

Tripathi, R. S. and Khan, M. L. 1990. Effect of seed weight and microsite characteristics on germination and seedling fitness in two species of Quercus in subtropical wet hill forest. Oikos 57: 289-296.


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