Power, R. A. 1888- Hints on soils and fertilizers / R.A. Power. - Girard, Kan. : Haldeman-Julius Co., c1923. - 64 p. : ill. ; 13 cm. - Little blue book ; no. 486 . LCCN: ca 24000709 Subjects--Topical Terms: Soils.Fertilizers. LC Class. No.: S591 / .P6