@article{article52f276b2,
title   = {Acid pH and host: cultivar effects on early stages of the symbiosis between beans (Phaseolus vulgaris, L.) and rizobium leguminosarum bv. Phaseoli},
author = {Vargas, A A T and Graham, P H},
year = {1989},
journal   = {Energia Nuclear e Agricultura}
}