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23587 documents, page 3 of 2359

Comparative Efficiency of Farm Tenure Classes in the

Miller, Walter G. (1959)
The extent to which the tenure status of farm operators affects agricultural e ffciency has interested economists for decades. Different theories dealing with the subject have evolved; but only a few empirical studies have been made to test their validity. This deficiency in agricultural economics research arises, at least partly, from the need for techniques and procedures that will deal adequately with the problems involved. One purpose of the study on which this report is based was to expl...

ステロイド糖尿病を呈せる母子の再生不良性貧血

西, 千鶴; 多々良, 和子; 寺内, ちせ; 鈴木, 美佐子; 星野, 珠子; 山住, 美津子 (1959)
東京女子医科大学学会第95回例会 1959年5月29日(金) 東京女子医大病院臨床講堂

Viljakaskaan (Calligypona pellucida f.) aiheuttaman kaurantuhon vaikutus kauran viljelyalaan ja satoihin Suomessa

Mikko Raatikainen; Aulis Tinnilä (1959)
Suomen läntisellä rannikkoseudulla viime vuosina esiintyneen Calligypona (Delphacodes) pellucidan aiheuttaman kaurantuhon syraptomit saattavat eri vuosina vaihdella. V. 1957 oli tuhoutuneiden kaurojen väritys heikosti kellanruskea ja versominen vähäinen sekä sato parempi edelliseen vuoteen verrattuna. Tuhoeläintutkimuslaitoksen tutkimusten sekä viljelijöiltä saatujen tietojen mukaan on uusien kaurantuhopaikkojen määrä vuoden 1955 jälkeen vähentynyt ja tuhon voimakkuudessa on vuoden 1955 jälke...

77 水田灌注剤に関する研究II(昭和34年度日本農学会大会分科会)

藤本, 啓一; 前川, 定文; 石田, 英夫; 細辻, 豊二; 日本農薬研; 日本農薬研; 日本農薬研; 日本農薬研 (1959)

安南漂流記の研究

石原. 道博 (1959)