Hot sekt
Hitchcock, A L%-tt^J S^E4.^i^
Manual of the grasses of the United States.
8:o Washington 1935*
=United States department of agriculture.
Miscellaneous publ. No 200(1935).
2 ed. Rev. by Agnes Chase. 8:o Washington 1950.
=United States department of agriculture.
Miscellaneous publ. No 200(1935). Rev. 1951.

Hitchcock, A Lent] ^L^-^^l
Manual of the grasses of the United States.
8:0 Washington 1935 .
=United States department of agriculture.
Miscellaneous publ . No 200(1935).
2 ed. Rev. by Agnes Chase. 8:0 Washington 1950.
=United States department of agriculture.
Miscellaneous publ. No 200(1935). Rev. 19 51.