Number | Name | Date | Kind |
---|---|---|---|
3343186 | Dunand | Sep 1967 | |
3995338 | Kauffeld | Dec 1976 | |
4007504 | West | Feb 1977 | |
4135265 | Van de Kerkof | Jan 1979 |
Number | Date | Country |
---|---|---|
472201 | Jan 1976 | AUX |
1223455 | Jun 1960 | FRX |
2055542 | Mar 1981 | GBX |
Entry |
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"C.A. C. Pollen Trap", M. V. Smith, Jun. 14, 1965. |
"Farmnote", S. R. Chambers, Mar. 1977. |
"Making and Using a Pollen Trap", E. R. Jaycox, Mar. 1977. |
"Feeding Bees", E. A. Karmo, Dec. 1974. |
"Instructions For Use . . . ", J. Matthenius, Jr., Feb. 1975. |
"Trapping Pollen . . . ", B. F. Detroy et al., 1976. |