Health of sugar maple in Canada = La santé de l'érable a sucre au Canada : results from the North American Maple Project, 1988-1993. -- Ottawa : Canadian Forest Service, 1995. -- 27, 24 s. : obr., tab. ; 28 cm. -- (Information report ; ST-X-10). -- Súbežný názov a text vo franc. -- ISBN 0-662-62002-X (brož.) : .00. -- ISSN 0705-324X

630*176.1+630*53+630*4+630*42/*48+630*22(71)
ZV001