TY - BOOK AU - Zapata Tosca, Víctor Manuel. TI - Forage yield and protein content of lowcrown and erect types of alfalfa under frequent clipping treatment PY - 1949/// CY - Ames PB - The author KW - Alfalfa como forraje KW - Alfalfa KW - Proteinas N1 - Thesis (Master of Science) -- Iowa State College ER -