1. Artis dieren encyclopedie deel 4
by Werken H. van de 
Price: USD 16.44
Dealer: Biblio, Antiquariaat Colombine
Description: Amsterdam, Ploegsma, 1970, 624p, paperback, nieuwstaat, geïllustreerd door Garth Williams, met foto's van J. Bokma - [NL] 

2. ARTIS DIEREN ENCYCLOPEDIE ZOOGDIEREN.
by WERKEN H. VAN DE 
Price: USD 22.00
Dealer: Abebooks, Rare Book Exchange
Description: 1036.WERKEN H. VAN DE 1959 ARTIS DIEREN ENCYCLOPEDIE ZOOGDIEREN. 253PP. ILLUSTRATED. HARD COVER NO DUST JACKET. GOOD CONDITION. (GNH-BASE-61) [Mastic Beach, NY, U.S.A.]  

3. Artis dieren encyclopedie : vogels
by van de Werken H : Bokma J photography: 
Price: USD 26.02
Dealer: Biblio, Rainy Day Books (Australia)
Description: Amsterdam; Uitgeverij Ploegsma, Very good blue cloth hardcover with edgeworn unclipped dustjacket. 253p includes index and recording of bird calls. A4. Heavy book will need postage adjustment. Amsterdam; Uitgeverij Ploegsma, [AU] 

4. Artis dieren-encyclopedie : vogels
by van de Werken, H : Bokma, J (photography): 
Price: USD 26.42
Dealer: AbebooksAU, Rainy Day Books (Australia)
Description: [publisher: Amsterdam; Uitgeverij Ploegsma] Hardcover Very good blue cloth hardcover with edgeworn unclipped dustjacket. 253p includes index and recording of bird calls. A4. Heavy book will need postage adjustment. [The Basin, VIC, Australia]