Уточнить поиск
Результаты 1-10 из 931
Practical skills training in an agricultural college
1988
Archer, A. C.
An overview of nitrogen cycling in agricultural ecosystems
1988
Qin Zuping (Wuhan Univ. (China). Dept. of Environmental Science)
An analysis of the agricultural knowledge system in Pakistan
1988
Malik, W.H.
Thesis (Ph.D.) - Cornell University, Ithaca, NY (USA)
Показать больше [+] Меньше [-]An analysis of agricultural real estate values in Mississippi
1988
Spurlock, Stan R. | Misra, Sukant K (Sukant Kumar) | Benoist, Lee Armand
An analysis of agricultural real estate values in Mississippi
1988
Spurlock, Stan R. | Misra, Sukant K (Sukant Kumar) | Benoist, Lee Armand
An inventory of disharmonies in EC agricultural policy measures
1988
Koester, Ulrich
Bestandsaufnahme einiger anorganischer Spurenstoffe in einem Ackerbaugebiet.
1988
Teichgraeber B.
A survey on Al, B, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb and Zn has been done in a small catchment area on loess soil which is used agriculturally only. Samples were taken from deposition, seepage, runoff water, sediments and soil to a depth of 1 m. Results from water samples are similar to those found elsewhere. Apart from a slight contamination with Cd, Pb and Zn sediments can be regarded as uncontaminated. During storm water runoff the mass of dry solids is responsible for the transport of heavy metals.
Показать больше [+] Меньше [-]Fertility differentials in an agricultural society: Saginaw County, Michigan, in 1850.
1988
Ross G.A.
[An experience in training senior agricultural staff for employment: the Agricultural Institute of Bouake (Cote d'Ivoire)]
1988
Woi-Messe, A. (Institut Agricole de Bouake (Cote d'Ivoire))
Factors affecting leaching in agricultural areas and an assessment of agricultural chemicals in the ground water of Kansas
1988
Perry, Charles A. | Robbins, F. V. | Barnes, Philip L.
