00710cam a22002411 4500 agr47000312 DLC 20260227111007.0 750903s1947 xx 000 0 eng agr47000312 (OCoLC)1595954 DLC FMU OCoLC DLC premarc S633 .C69 1947 Collings, Gilbeart H. (Gilbeart Hooper), 1895-1964. Commercial fertilizers, their sources and use. 4th ed. Philadelphia [1947] xi, 522 p. illus (part col.) ports. maps. 24 cm Blakiston books on agriculture Bibliography: p. 475-498. Fertilizers. 10682 10682