notion, origins, classification, opposition

Igor Ilichev - ISBN: 978-613-9-46165-3

Researchers & Studies

Sadeq Al Yaari - ISBN: 978-620-0-00695-0

Сборник статей

Наум Сирота, Геннадий Мохоров - ISBN: 978-613-9-47470-7

A definite way to achieve high yield

Aashima Batheja, Shiv Raj Pundir - ISBN: 978-613-9-47581-0

Umar Khan - ISBN: 978-3-659-89865-5

Martin Nwodo - ISBN: 978-620-0-00066-8

Ramkrishna Dahal, Sushil Paudel, Dinesh Kafle - ISBN: 978-620-0-00231-0

Jun Zhao - ISBN: 978-620-0-00040-8

Samuel K. B. Asante - ISBN: 978-613-9-47215-4

And Willingness to Pay for its Grain in Districts around Gilgel Gibe Hydro-Electricity

Samuel Chelkeba - ISBN: 978-3-659-97903-3