筛选
科学数据
统计数据
共检索到8854条 ,权限内显示50条;
National Camping Market Survey, 1978;;Archival Version
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr07800
- 摘要：
- ormation. There are four files of data, each with 2,013 records: file one contains the first 80 columns of data per respondent; file two contains the second 80
Great Plains Population and Environment Data: Social and Demographic Data, 1870-2000 [United States];;Version 1
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr04296.v1
- 摘要：
- , and Vital Statistics of the United States are not collected from a sample. Details of data collection procedures for religion and vital statistics information are ava
Great Plains Population and Environment Data: Social and Demographic Data, 1870-2000 [United States];;Version 2
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr04296.v2
- 摘要：
- , and Vital Statistics of the United States are not collected from a sample. Details of data collection procedures for religion and vital statistics information are ava
Great Plains Population and Environment Data: Social and Demographic Data, 1870-2000 [United States];;Archival Version
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr04296
- 摘要：
- , and Vital Statistics of the United States are not collected from a sample. Details of data collection procedures for religion and vital statistics information are ava
South Korean Occupational Wage Survey: 1971, 1976, 1980, 1983, 1986, 1989, 1992, 1994, 1996, 1998;;Version 1
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr24621.v1
- 摘要：
- ear to cause a significant change in the types of nonfarm enterprises covered by the survey.;;ICPSR data undergo a confidentiality review and are altered
South Korean Occupational Wage Survey: 1971, 1976, 1980, 1983, 1986, 1989, 1992, 1994, 1996, 1998;;Archival Version
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr24621
- 摘要：
- ear to cause a significant change in the types of nonfarm enterprises covered by the survey.;;ICPSR data undergo a confidentiality review and are altered
Data from: Reliable species distributions are obtainable with sparse, patchy and biased data by leveraging over species and data types
- 负责人：
- DOI：
- doi:10.5061/dryad.2226v8m
- 摘要：
- 1. New methods for species distribution models (SDMs) utilise presence?absence (PA) data to correct the sampling bias of presence?only (PO) data
Data from: The genomic basis for short-term evolution of environmental adaptation in maize
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.q573n5tdt
- 摘要：
- Quality control genotype?data (45,718 variant sites) for samples from Hallauer's Tusón. Tab delimited file
National Camping Market Survey, 1973;;Version 2
- 负责人：
- 关键词：
- DOI：
- doi:10.3886/icpsr07799.v2
- 摘要：
- of the respondents which analyzed past, present, and future camping activities and background information.;;ICPSR data undergo a confidentiality review and are altered
