00928cam a22002531 4500 agr44000073 DLC 20260227111002.0 770825s1944 xx 000 0 eng agr44000073 (OCoLC)3219558 DLC OC DLC premarc S531 .D49 630.712 Dickerson, Douglas Francis, 1882- Directed studies in general agriculture, an outline course with complete references for use in schools, by Douglas Francis Dickerson and Gilbeart H. Collings. [Grand Rapids, Minn., Grand Rapids herald-review, c1944] 120 p. illus., forms. 28 cm. Cover-title. "Selected list of agricultural reference books": p. 1-2. Agriculture Study and teaching. Collings, Gilbeart H. (Gilbeart Hooper), 1895-1964, joint author. 10297 10297