tailieunhanh - The fish stock assessment manual

The earliest stone tools were crude, being little more than a fractured rock. In the Acheulian era, beginning approximately million years ago, methods of working these stone into specific shapes, such as hand axes emerged. The Middle Paleolithic, approximately 300,000 years ago, saw the introduction of the prepared-core technique, where multiple blades could be rapidly formed from a single core stone.[23] The Upper Paleolithic, beginning approximately 40,000 years ago, saw the introduction of pressure flaking, where a wood, bone, or antler punch could be used to shape a stone very finely.[25]. | Fish stock assessment manual FAO FISHERIES TECHNICAL PAPER 393 Fish stock assessment manual FAO FISHERIES TECHNICAL PAPER by Emygdio L. Cadima Consultant FAO Fisheries Department FOOO AHO AGRICULTURE ORGANIZATION OF THE UNITED RABONS Rome. 2003 MiniHIHH RAF9-983-SNB5 Th designation employed and the presentation of matonal in ttvs information product do not T ply th expression of any opinion whatsoever cn the cart of the Food and Aprci turc Organisation of the United Nations concerning the legal or dftvclopmont status of any country. tomhxy. city Of area or of Its authorities. Of concerning the defimitation of Its frontiers or ISON 924 10450 6 All rights reserved. Reproduction and dissemination of marerial in this information product for odocAtional or other non-oommw-al purpo os are authorized without any prior written peer won from the copyright holders provided We ftourc is fully acknowledged. Reproduction of matanal In this information product for resa e O other commercial purposes ĨS probated without written permission of the copyright holdere. Applications for such pcmiiRiucn should bo addressed to the Chef. Pudishing Mnnagomnrt Sorvcc tnformatioG CXvisisn. FAO. Vale delle Terne di CaracaJa. 00100 Rome. Italy FAO 2003 Sách có ban .

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