Sánchez López, D.B. and Pérez Pazos, J.V. 2018. Characterization and evaluation of PGPRs on the growth of in vitro seedlings of <i>Dioscorea rotundata</i>. Agronomía Costarricense. 42, 2 (Jun. 2018). DOI:https://doi.org/10.15517/rac.v42i2.33780.