Разширено търсене
Автор да съдържа Fred Boswell
Пр 1637
Каталог "Книги"
Evaluation of municipal sewage sludge for land treatment in crop production
(1981)
Fred Boswell
Пр 1637
Каталог "Книги"
Correlation of extractable soil phosphorus and plant phosphorus with crop yields for double-cropped wheat and soybeans
(1984)
William Hargrove; Fred Boswell; Joe Touchton