Уточнить поиск
Результаты 1-10 из 13
Organizat︠s︡ii︠a︡ rybnogo khozi︠a︡ĭstva na mestnykh vodoemakh | Организация рыбного хозяйства на местных водоемах
1948
Isaev, A. I (Aleksandr Ivanovich)
Kul'tura orfy v prudakh; biologii︠a︡ i tokhnika razvedenii︠a︡ | Culture of ides in ponds; biology and technology of the cultivation
1948
Sukhoverkhov, F. M.
Maryland commercial fisheries statistics, 1944-1945 Полный текст
1948
Hammer, Ralph C. | Hensel, Harry A. | Tiller, Richard E.
This report presents a statistical analyses of the "fin" fisheries, as distinguished from the crab and oyster fisheries of Maryland, for 1944 and 1945. Comparative data on the catch by species, by area, and by gear, based principally on daily reports from the fishermen, are available for the first time as a result of a comprehensive statistical survey made by the Department of Research and Eduction to determine the results of the new management plan for the fisheries, referred to as the Maryland Management Plan.With the initiation in 1941 of a new system of fishery management in the State, a conservation plan based on the principle of stabilized fishing effort, it became obvious that a more accurate catch record system was needed for the proper administration of the program. The Management Plan stabilized the number of licensed fishermen at the 1939-1940 level, and provided for controlled expansion of the fishery to take place only when and where the industry warranted it as a result of increased fish populations. The text of the Plan may be found in Article 39, Section 60, Annotated Code of Maryland, 1943 Supplement. Publications 1, 2, 5, and 6 of the Educational Series of the Department of Research and Education explain the operating principles and the application of same to two important Maryland species, the shad and the rock or striped bass.Ocean fishery records only cover monthly gross landings.
Показать больше [+] Меньше [-]Fiskets gang. 34. årgang Полный текст
1948
Fiskeridirektoratet
Lofotfisket 1947 | 1. Beretning, avgitt av utvalgsformannen, Gerh. Sandvær. | 2. Fiskeforsøk, av fiskerikonsulent M. O. Kristensen. Полный текст
1948
Sandvær, Gerh. | Kristensen, M. O.
Bestemmelser om omsetning m.v. av agn Полный текст
1948
Fiskeridirektoratet
Særtrykk av "Fiskets Gang"
Показать больше [+] Меньше [-]I. En typisk pasifik størjesnurpe II. Beskrivelse av partrål og bruk av redskapet etter de erfaringer en har fått ved Fiskerfagskolen på Aukra Полный текст
1948
Grønningsæter, Arne
Særtrykk av "Fiskets Gang"
Показать больше [+] Меньше [-]Merking av torsk i Lofoten 1947-1948. Foreløping beretning II Полный текст
1948
Dannevig, Gunnar
Særtrykk av "Fiskets Gang"
Показать больше [+] Меньше [-]Fiskerilitteratur 1947. Tilføyelser for tidligere år Полный текст
1948
Koefoed, Einar
Medisintran. Handelsdepartements nye forskrifter og bestemmelser om kvalitetskontroll, datert 18. mai Полный текст
1948
Fiskeridirektoratet
Særtrykk av "Fiskets Gang"
Показать больше [+] Меньше [-]