Zobrazeno 1 - 5
of 5
pro vyhledávání: '"H. G. van Heerden"'
Publikováno v:
South African Journal of Plant and Soil. 7:131-135
Cotton fibre samples from three different localities were commercially processed into 15 and 30 tex ring spun yarns and 20, 30 and 50 rotor spun yarns. Multiple regression analyses were used to relate yarn tenacity and irregularity to the different f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c605637964d0c77c25e66c8c725f34db
https://doi.org/10.1080/02571862.1990.10634552
https://doi.org/10.1080/02571862.1990.10634552
Autor:
H G, van Heerden, J T, Mets
Publikováno v:
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde. 79(7)
Health surveillance of employees at a lead mine in the northern Cape, employing about 1,400 people, is specifically aimed at early detection of excessive lead absorption, which is the main chemical hazard. Over a period of 9 years the blood lead leve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::232cbb8f04a9b85d115c60889d1b1b36
https://pubmed.ncbi.nlm.nih.gov/2014463
https://pubmed.ncbi.nlm.nih.gov/2014463
Publikováno v:
South African Journal of Plant and Soil. 8:108-109
Letaba, NIK2 and OR19 were released for commercial cultivation in the R.S.A. in 1989. Letaba has potential as a dryland cultivar in the Springbok Flats and northern Natal. NIK2 is intended for cultivation under irrigation in the same areas and has fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e30b38563b3dc4e01f6680e466058d7d
https://doi.org/10.1080/02571862.1991.10634590
https://doi.org/10.1080/02571862.1991.10634590
Publikováno v:
South African Journal of Plant and Soil. 5:117-119
Reciprocal differences in a diallel cross experiment with air-cured tobacco strains were found to be significant for certain characteristics, but relatively small compared to differences between strains in general combining ability. A factorial analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a38ef1ffedbf0a32e493abc4e40879cd
https://doi.org/10.1080/02571862.1988.10634267
https://doi.org/10.1080/02571862.1988.10634267
Autor:
J. F. Jarvis, H. G. van Heerden
Publikováno v:
The Journal of laryngology and otology. 81(1)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d08b2ffc597193f0628a4937e1de1f6
https://pubmed.ncbi.nlm.nih.gov/6017316
https://pubmed.ncbi.nlm.nih.gov/6017316