hardy in the cold-and warm-temperate zone Ouden, P. den (Pieter den) 1874-1964 creator Boom, B. K. (Boudewijn Karel) 1891- text The Hague Boston Hingham, MA, USA M. Nijhoff Distributors for the U.S. and Canada, Kluwer Boston 1982 3rd ed. monographic x, 520 p. : ill. ; 24 cm. by P. den Ouden, in collaboration with B.K. Boom. Includes indexes. Ornamental conifers Conifers Ornamental conifers Varieties Conifers Varieties SB428 .O8 1982 635.9/752 9024721482 9024726441 (pbk.) 82012620 UOEL 000 20150519151338.0 3750898