関連ワード:
explain the primary secondary and tertiary sector with example what are the primary secondary and tertiary sectors with examples explain primary secondary and tertiary sector with examples class 10 explain primary secondary and tertiary sector with examples class 9 explain the difference between primary secondary and tertiary sector with example define primary secondary and tertiary sector with example define primary secondary and tertiary sector with example class 10 explain the primary secondary and tertiary sector by giving example of each 5 define primary secondary and tertiary sector with examples
