00650cam a22002291a 4500 agr50000062 DLC 20260227111012.0 830407s1949 enk b 000 0 eng agr50000062 (OCoLC)9386067 DLC ICJ DLC premarc S661 .B6 Blackburn, John Stead, 1882- Organic husbandry : a symposium. London : The Biotechnic Press, 1949. 160 p. ; 23 cm. "Compiled and issued by John S. Blackburn."-- p. 160. Imprint stamped on t.p. Bibliography: 149-160. 11116 11116