P. J. O'Gara

1872 — 1927 · 11 obras en el catálogo

Obras

AA comparative test of fuel oils and appliances used in orcha

A comparative test of fuel oils and appliances used in orchard heating to prevent frost injury

TThe Pacific Coast cedar rust of the apple, pear, quince and

The Pacific Coast cedar rust of the apple, pear, quince and related pome fruits caused by Gymnosporangium blasdaleanum

TThe prevention of frost injury in the orchards of the Rogue

The prevention of frost injury in the orchards of the Rogue River Valley, Oregon

The protection of orchards in the Pacific Northwest from spring frosts by means of fires and smudges

TThe raspberry cane blight and how to control it

The raspberry cane blight and how to control it

SStudies on the water core of apple

Studies on the water core of apple

WWater core of apple

Water core of apple

NNew species of Colletotrichum and Phoma

New species of Colletotrichum and Phoma

OOccurrence of silver scurf of potatoes in the Salt Lake vall

Occurrence of silver scurf of potatoes in the Salt Lake valley, Utah

BBacterial blight of alfalfa in the Salt Lake valley

Bacterial blight of alfalfa in the Salt Lake valley

SSterlity in oats caused by grass thrips

Sterlity in oats caused by grass thrips