TY  - GEN
AU  - Hitchcock, A. S. (Albert Spear), 1865-1935
TI  - The genera of grasses of the United States with special reference to the economic species
PY  - 1920///
CY  - Washington
PB  - Govt print. off.
KW  - ESTADOS UNIDOS
KW  - GRAMINEAS
ER  -