Titlebook: Studies on Lake Vechten and Tjeukemeer, The Netherlands; 25th anniversary of R. D. Gulati,Dr S. Parma (Director) Book 1982 Dr W. Junk Publ

Thrombolysis

无动于衷

假

Structural and functional characteristics of epiphyton and epipelon in relation to their distributioe limiting factor was evident from periphyton developed on artificial substrates. This periphyton differed widely in its composition from that on the natural substrates, mainly because the latter collected much more sedimenting matter..In dense . stands light was severely attenuated and the signific

Culmination

抚慰

Book 1982atural balance or a ‘reasonable‘ water quality. The pollution abatement programmes are based on ecological theories; accepting waterbodies as aquatic ecosystems, the authorities concerned try to influence and lead the progresses in the systems to reach or maintain the desired ecosystem structure. Su

Instrumental

ible the natural balance or a ‘reasonable‘ water quality. The pollution abatement programmes are based on ecological theories; accepting waterbodies as aquatic ecosystems, the authorities concerned try to influence and lead the progresses in the systems to reach or maintain the desired ecosystem structure. Su978-94-009-8017-4978-94-009-8015-0

净礼

its high cost, it is a practically useful tool for field researchers, extension specialists, and crop consultants who do not have access to well-equipped laboratories. On-farm, adaptive research is in progress in three countries to adapt the chlorophyll meter technique for transplanted and wet-seede

努力赶上

C. L. M. Steenbergen,H. Verdouwhone cables. Satellite communications deserve the special merit to allow connecting people at great distances by using the same (homogeneous) communication system and technology. Other very signi?cant advantages of the satellite - proach are: (i) easy fruition of both broadcast and multicast high bi

并置

C. L. M. Steenbergenhone cables. Satellite communications deserve the special merit to allow connecting people at great distances by using the same (homogeneous) communication system and technology. Other very signi?cant advantages of the satellite - proach are: (i) easy fruition of both broadcast and multicast high bi

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