Radcliffe, E. Evaluation of the United States Potato Collection for Resistance to green peach aphid and potato aphid. St. Paul, Minnesota: 1981 41 p. : tab.
Radcliffe, E. Evaluation of the United States Potato Collection for Resistance to green peach aphid and potato aphid. St. Paul, Minnesota: 1981 41 p. : tab.
Radcliffe, E. (1981) Evaluation of the United States Potato Collection for Resistance to green peach aphid and potato aphid, St. Paul, Minnesota: 41 p. : tab.
Radcliffe, E. (1981). Evaluation of the United States Potato Collection for Resistance to green peach aphid and potato aphid. St. Paul, Minnesota: 41 p. : tab.
Radcliffe E. Evaluation of the United States Potato Collection for Resistance to green peach aphid and potato aphid. St. Paul, Minnesota: 1981. p. 41 p. : tab.