منابع مشابه
CYTOTAXONOMIC STUDIES IN WEST HIMALAYAN BRYACEAE (MUSCI)
The meiotic chromosomes of 10 species (Pohlia elongata, Anomobryum cymbifolium, Brachymenium acuminatum, B. ochianum, B. sikkimense, Bryum cellulare, B. pseudotriquetrum, B. apiculatum, B. capillare and B. atrovirense), in four genera of the family Bryaceae of acrocarpous mosses are studied with special emphasis on their evolution, polyploidy and cytological features with reference to interrela...
متن کاملCohabiting unions in France and West Germany
This paper compares the non-marital birth pattern in France and West Germany. Since the beginning of the eighties, France witnessed a steady increase in non-marital birth rates, while in West Germany non-marital birth rates have remained at a relatively low level. We attribute these differences to the institutional and legal constraints from both sides of the Rhine which hamper or foster childb...
متن کاملWest African crystalline maculopathy.
OBJECTIVE To describe the findings of a new crystalline maculopathy exclusively affecting elderly members of the Igbo tribe of southeast Nigeria. DESIGN Retrospective, observational noncomparative case series. METHODS Six patients referred over a 2-year period to the medical retina consultation service of the King/Drew Medical Center (Los Angeles, Calif) were identified as having a characte...
متن کاملWest African malaria.
Plasmodium falciparum malaria poses an increasing risk to travellers to West Africa. The development of chloroquine resistant in West Africa has further compounded the risk. Two cases of falciparum malaria from Sierra Leone are presented. One represents the classic missed case and the other a probable case of chloroquine resistant (RI vide infra) falciparum malaria. These cases highlight the da...
متن کاملNitrogen Cycling in West African Ecosystems MICROBIOLOGICAL CONSIDERATIONS OF THE NITROGEN CYCLE IN WEST AFRICAN ECOSYSTEMS
The review is an attempt to specify particular features of the biological processes involved in the nitrogen cycle as they occur in the following categories of West African ecosystems : flooded rice .fields, rain-fed agroecosystems, and forests. In rice fields in Senegal the nitrogen input through blue-green algae was reported to be in the range -, of 1-30 kg ha-' yr-'. Figures for heterotrophi...
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ژورنال
عنوان ژورنال: Journal of African Studies
سال: 1969
ISSN: 0065-4140,1884-5533
DOI: 10.11619/africa1964.1969.9_51