cycle of infection. Studies tluis far conducted 

 at tlie Patuxent Center, as well as observations 

 and studies in tlie field, sugo-est strongly that con- 

 taminated concentration points used by doves may 

 be important sources of infection. Most out- 

 breaks appear to have arisen from such concen- 

 trations as l)ackyard feeding sites and livestock 

 feedlots, wliei-e the birds congregate in large 

 numbers. 



Wd/erfoirJ piiia-s/fe piihlicufion. — A publication 

 is being prepared whicli will treat in detail the 

 parasite worms in waterfowl. This will be the 

 only complete host-parasite catalog of the hel- 

 minths for Nortii .Vincrican watei'fowl. The re- 

 lease date is expected to be late in VMVn. 



During the calendar year 1!)()2 a total of 101 

 publications by wildlife research 2)ersonnel, exclu- 

 sive of Unit Leaders, appeared in a wide variety 

 of journals, bulletins, special scientific reports, 

 and other media (appendix E). Publications by 

 Unit personnel, including cooperative State co- 

 workers and gi-aduate students, numbered 135, of 

 whicli 19 were on fisheries subjects. 



"Wildlife research reports issued in the various 

 itublication series of the U.S. Fish and Wildlife 



Service ai-e a\ailable from the Bureau of Sport 

 Fisheries and AVildlife or the Superintendent of 

 Documents, Washington, D.C. Reprints of most 

 of the articles appearing in outside technical jour- 

 nals or in the transactions of scientific meetings 

 are pi-ocured in limited numbers to facilitate the 

 distril)ution of findings to conservation agencies 

 and indi\i(luals having need for information on 

 the s]iecific topics involved. Most of the publi- 

 cations listed under the Cooperative Wildlife Re- 

 search Units are available from the Unit 

 lesponsibh^ for the respective release. 



PUBLICATIONS 



Wild life Review, an abstracting service for the 

 wildlife ])rofession, has been published and dis- 

 tributed by tlie Bureau since VXAii. In 1961, au- 

 thority was received to increase to o.OOO the num- 

 ber of each issue, and arrangements were made to 

 have the printing done quarterly by the Govern- 

 ment Printing Office. A total of 3(56 libraries in 

 the United States, Canada, and foreign countries 

 served as repositories for Wildlife Review in 1962. 



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