Caption title."Contribution from Bureau of Agricultural Economics."Includes bibliographical references.Mode of access: Internet
Contribution from Bureau of Agricultural Economics.Cover title.Bibliograhy: p. 71-73.Mode of access:...
"Contribution from the Bureau of Plant Industry."Caption title.Includes bibliographical references.M...
"Assisted by representatives of the agricultural colleges and extension services and the Federal Far...
Caption title."Contribution from Bureau of Agricultural Economics."Includes bibliographical referenc...
Caption title."Contribution from Bureau of Agricultural Economics."Bibliography: p. 62-63.Mode of ac...
"Contribution from Bureau of Agricultural Economics."Caption title.Includes bibliographical referenc...
Caption title."Contribution from Extension Service."Includes bibliographical references.Mode of acce...
Caption title."Contribution from Bureau of Agricultural Economics."Includes bibliographical referenc...
"Contribution from Bureau of Agricultural Economics."Caption title.Mode of access: Internet
"Contribution from Bureau of Agricultural Economics."Caption title.Mode of access: Internet
Cover title.Includes bibliographical references (p. 45-48).Mode of access: Internet
Contribution from Bureau of Agricultural Economics.Caption title.Bibliography: p. 84-85.Mode of acce...
Caption title."Contribution from Bureau of Plant Industry."Includes bibliographical references.Mode ...
"Contribution from Bureau of Agricultural Economics."Caption title.Includes bibliographical referenc...
Contribution from Bureau of agricultural economics."Sources consulted": p. II.Mode of access: Intern...
Contribution from Bureau of Agricultural Economics.Cover title.Bibliograhy: p. 71-73.Mode of access:...
"Contribution from the Bureau of Plant Industry."Caption title.Includes bibliographical references.M...
"Assisted by representatives of the agricultural colleges and extension services and the Federal Far...
Caption title."Contribution from Bureau of Agricultural Economics."Includes bibliographical referenc...
Caption title."Contribution from Bureau of Agricultural Economics."Bibliography: p. 62-63.Mode of ac...
"Contribution from Bureau of Agricultural Economics."Caption title.Includes bibliographical referenc...
Caption title."Contribution from Extension Service."Includes bibliographical references.Mode of acce...
Caption title."Contribution from Bureau of Agricultural Economics."Includes bibliographical referenc...
"Contribution from Bureau of Agricultural Economics."Caption title.Mode of access: Internet
"Contribution from Bureau of Agricultural Economics."Caption title.Mode of access: Internet
Cover title.Includes bibliographical references (p. 45-48).Mode of access: Internet
Contribution from Bureau of Agricultural Economics.Caption title.Bibliography: p. 84-85.Mode of acce...
Caption title."Contribution from Bureau of Plant Industry."Includes bibliographical references.Mode ...
"Contribution from Bureau of Agricultural Economics."Caption title.Includes bibliographical referenc...
Contribution from Bureau of agricultural economics."Sources consulted": p. II.Mode of access: Intern...
Contribution from Bureau of Agricultural Economics.Cover title.Bibliograhy: p. 71-73.Mode of access:...
"Contribution from the Bureau of Plant Industry."Caption title.Includes bibliographical references.M...
"Assisted by representatives of the agricultural colleges and extension services and the Federal Far...