共 8 条
[2]
HARLE A, 1948, PFLANZENSCHUTZDIENST, V2, P40
[3]
JENKINSON J. G., 1953, BEE WORLD, V34, P173
[4]
KOUTENSKY J, 1959, SBORNIK CESKOSLOVENS, V5, P571
[5]
OLSSON G., 1958, Sveriges Utsadesforenings Tidskrift, V68, P74
[6]
VESELY V, 1962, SBORNIK CESKOSLOVENS, V35, P659