DESCRIPTIONS OF THREE NEW SPECIES OF UNIONES FROM MEXICO U COUCHIANUS U SALADOENSIS U COGNATUS - LEA, ISAAC (My University, 1860)
PUBL ASTRON SOC PAC
Keywords: DESCRIPTIONS, NEW SPECIES, MEXICO, U COUCHIANUS, U SALADOENSIS, U COGNATUS; CIENCIAS DE LA VIDA; GEOGRAFIA; DESARROLLO DE LA TIERRA