Allen, O. N.
Experiments in soil bacteriology / O. N. Allen - Minneapolis : Burgess, c1949 - vi, 71 p. : ill. ; 27 cm.
Includes bibliographical reference and index.
631.46 / ALE
Experiments in soil bacteriology / O. N. Allen - Minneapolis : Burgess, c1949 - vi, 71 p. : ill. ; 27 cm.
Includes bibliographical reference and index.
631.46 / ALE