Text ( visual ) : unmediated Microbes and biological productivity / [edited by D.E. Hughes and A.H. Rose]. -- Cambridge [Eng.] : Published for the Society for General Microbiology at the University Press , 1971. -- x, 378 p., [3] leaves of plates : ill. ; 24 cm. -- (Symposia ; 21). -- "Twenty-first symposium of the Society for General Microbiology held at University College, London, April 1971." ; Includes bibliographical references and index. -- ISBN 0521081122 ; (BA10563386) ; https://ci.nii.ac.jp/ncid/BA10563386 Author Heading(s): Society for General Microbiology ; Hughes, D. E. (David Edward) ; Rose, Anthony H.. -- Classification(s): LCC : QR1 ; DC : 576. -- Subject Heading(s): LCSH : Microorganisms -- Congresses ; LCSH : Biological productivity -- Congresses