TY - GEN AU - Fontaine,M S AU - Young,P H AU - Torrey,J G TI - Effects of long-term preservation of frankia strains on infectivity, effectivity, and in vitro nitrogenase activity SN - 0099-2240 PY - 2010///0625 N1 - Publication Type: Journal Article UR - https://doi.org/10.1128/aem.51.4.694-698.1986 ER -