TY  - BOOK
AU  - Johnston,C.O.
TI  - Physiologic races of Puccinia recondita f. sp. tritici in the United States from 1926 through 1960
T2  - U.S. Dept. of Agriculture. Technical bulletin
AV  - S21 .A72 no. 1393
U1  - 630/.8 s 
PY  - 1968///]
CY  - Washington]
PB  - Agricultural Research Service, U. S. Dept. of Agriculture
KW  - Puccinia recondita
N1  - Bibliography: p. 18
ER  -