36 pages, 6 unnumbered leaves of plates : illustrations ; 26 cm
OCLC
ocm03739193
On t.p.: Vegetable pathological and physiological investigations, Pathological and Plant Breeding Laboratories.
Supt. of Docs. no.: A 19.3.
Includes bibliographical references.
I.The wilt disease of the cowpea and its control / W. A. Orton -- II. W.A.A cowpea resistant to root knot (heterodera radicicola) / Herbert J. Webber and W. A. Orton