Biological study of aphelinus mali hald, a parasite of the wooly apple aphid, er
Lundie, Arnold E.
Biological study of aphelinus mali hald, a parasite of the wooly apple aphid, er - Ithaca 1923 - 1-27 p. - Cornell Agricultural Experime .
Biological study of aphelinus mali hald, a parasite of the wooly apple aphid, er - Ithaca 1923 - 1-27 p. - Cornell Agricultural Experime .