Transactions of the Mississippi Valley Horticultural Society.

v.2 (1884)

Transactions of the Mississippi Valley Horticultural Society.

v.1 (1883)

Flora of the Aguan valley and the coastal regions near La Ceiba, Honduras, by T. G. Yuncker.

v.9:no.4(1940)

Flora of the Lancetilla Valley, Honduras, by Paul C. Standley.

v.10(1931)

Flora, Tehuacán Valley [by] C. Earle Smith, Jr.

v.31:no.4(1965)

Agriculture, Tehuacan Valley.

v.31:no.3(1965)

Sites of the reserve phase: Pine Lawn Valley, western New Mexico / [by] Paul S. Martin [and] John B. Rinaldo.

v.38:no.3(1950)

Notes on birds from the Marcapata Valley, Cuzco, Peru / Melvin A. Traylor.

v.34:no.3(1952)