Photoperiodic responses of sugar-cane in Puerto Rico
Tio, Marco Antonio.
Photoperiodic responses of sugar-cane in Puerto Rico by Marco Antonio Tio. - 1952. - 84 leaves ill.
Thesis (Ph.D.)--Pennsylvania State College, 1952.
Bibliography: leaves 77-84.
Photocopy.
Ann Arbor, Mich.
University Microfilms
1983.
21 cm.
Sugar cane--Field experiments.--Puerto Rico
Plant photoperiodism.
Photoperiodic responses of sugar-cane in Puerto Rico by Marco Antonio Tio. - 1952. - 84 leaves ill.
Thesis (Ph.D.)--Pennsylvania State College, 1952.
Bibliography: leaves 77-84.
Photocopy.
Ann Arbor, Mich.
University Microfilms
1983.
21 cm.
Sugar cane--Field experiments.--Puerto Rico
Plant photoperiodism.