Dyfyniad APA

Gehrke V, M. R. (1962). Distribution of absorbing roots of coffee (Coffea arabica L.) and rubber (Hevea brasilensis Muell. Arg.) in mixed plantings in two ecological zones of Costa Rica.

Dyfyniad Arddull Chicago

Gehrke V, M. R. Distribution of Absorbing Roots of Coffee (Coffea Arabica L.) and Rubber (Hevea Brasilensis Muell. Arg.) in Mixed Plantings in Two Ecological Zones of Costa Rica. 1962.

Dyfyniad MLA

Gehrke V, M. R. Distribution of Absorbing Roots of Coffee (Coffea Arabica L.) and Rubber (Hevea Brasilensis Muell. Arg.) in Mixed Plantings in Two Ecological Zones of Costa Rica. 1962.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.