ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00555.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

The key to the expansion of Russia to the Far East and to America is to be found in the loss of the valley of the Amur to China by the Treaty of Nerchinsk in 1689 and its reacquisition in the period from 1854 to 1860. R. J. Kerner, “Russian Expansion to America, Its Bibliographical Foundations, Papers of the Bibliographicul Society of Americ

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00556.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00557.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

SUMMARY AND CONCLUSIONSThe claim of many that certain features of Jamaican land reform discourage optimum increases in farm output has been pointed out. To test the argument, seven land‐reform features, which meet methodological, theoretical, and practical restrictions, have been examined. An hypothesis derived mainly from agricultural‐ economic theory about the linear relation between each of the seven features and farm output per acre has been devised. The hypotheses have been tested with a multiple regression analysis of data from six land settlements selected to represent a variety of geographic settings. The hypotheses have been partially upheld, but must be revised in the following form: (1) in many cases, particularly in the early years of production, farm acreage is negatively related to output per acre; (2) in subsistence areas, where great diversity in agriculture is common, greater diversification leads to greater output per acre; (3) in most cases where farmers live an appreciable distance from their holdings (at least 0.3 miles), output per acre is negatively related to the distance; (4) output per acre declines as the age of operator increases, but only if the operator is mainly dependent on his own labour, and only after a relatively advanced age (60 years, perhaps) has been attained; (5) the number of a farmer's dependents does not affect output (gross income per acre); (6) a farmer's non‐farm income does not exhibit a negative relation to output per acre, and may be positively related if the outside income can be used to purchase productive farm inputs; (7) in some cases acreage of additional land used is positively related to output per acre on settlement properties. Hopefully, further research will lead to a more rational basis for the formulation of these hypotheses.Using the regression equations, estimates have been made of the changes in output per acre which could have been achieved with feasible changes in relevant factors. Estimates indicate that current farm output could have been greatly increased in some settlements, thus justifying some of the criticism of Jamaican land r

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00558.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00559.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

摘要:

Book reviewed in this article:Rock Control in Geomorphology, by EijuYatsuThe Internal Structure of Retail Nucleations, by BarryJ. GarnerThe Pacific Basin: A History of its Geographical Exploration, edited by HermanR. FriisCanada: An Appraisal of its Needs and Resources, by GeorgeW. Wilson, ScottGordon, StanislawJudek, and AlbertBretonVegetation Mapping, by A. W. KüchlerGeography and Economics, by M. Chishol

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00561.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00562.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00563.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1968.tb00564.x

出版商:Blackwell Publishing Ltd    

年代:1968

数据来源: WILEY