Разширено търсене
Автор да съдържа Paul Hepler
Пр 2000
Каталог "Книги"
Field appraisal of resource management systems FARMS : Crop yield and quality relationships with soil erosion - 1982
(1985)
Paul Hepler; et al.
Пр 2000
Каталог "Книги"
Field appraisal of resource management systems farms
Crop yield and quality relationships with soil erosion - 1980
(1983)
Paul Hepler; Lauren Ho Long; John Ferwerda
Пр 2000