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Netherlands Amsterdam 17th century canal ring area inside the Singelgracht listed as World Heritage by UNESCO two stoned Stock Photo - Alamy
![Elementary text-book of zoology. i6o ARCHICCELOMA TA. {e.g., Arenicola) as a general feature of the whole coelom. It Consists mainly of a ring-canal round the mouth, five radial vessels just below Elementary text-book of zoology. i6o ARCHICCELOMA TA. {e.g., Arenicola) as a general feature of the whole coelom. It Consists mainly of a ring-canal round the mouth, five radial vessels just below](https://c8.alamy.com/comp/RDGHK9/elementary-text-book-of-zoology-i6o-archicceloma-ta-eg-arenicola-as-a-general-feature-of-the-whole-coelom-it-consists-mainly-of-a-ring-canal-round-the-mouth-five-radial-vessels-just-below-the-heads-of-the-ambulacral-ossicles-and-a-single-inter-radial-stone-canal-running-in-the-median-mesentery-to-the-madreporite-through-which-it-communi-cates-with-the-exterior-each-radial-canal-gives-off-paired-fig-93diagram-of-the-water-vascular-system-of-the-common-starfish-altered-from-gegenbaur-stone-canal-madreporite-radial-canal-ring-canal-lateral-canals-which-lead-to-the-roun-RDGHK9.jpg)
Elementary text-book of zoology. i6o ARCHICCELOMA TA. {e.g., Arenicola) as a general feature of the whole coelom. It Consists mainly of a ring-canal round the mouth, five radial vessels just below
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Seventeenth-Century Canal Ring Area of Amsterdam inside the Singelgracht - UNESCO World Heritage Centre
![Figure 7 from Assembly of ring canals in the male germ line from structural components of the contractile ring. | Semantic Scholar Figure 7 from Assembly of ring canals in the male germ line from structural components of the contractile ring. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/0d255f17cd5813ac10ee4a0427615000c450d97e/8-Figure7-1.png)
Figure 7 from Assembly of ring canals in the male germ line from structural components of the contractile ring. | Semantic Scholar
![Beautiful, Unique, and Definitely a Must See - Review of Amsterdam Canal Ring, Amsterdam, The Netherlands - Tripadvisor Beautiful, Unique, and Definitely a Must See - Review of Amsterdam Canal Ring, Amsterdam, The Netherlands - Tripadvisor](https://media-cdn.tripadvisor.com/media/photo-s/17/b2/ea/45/amsterdam-canal-ring.jpg)
Beautiful, Unique, and Definitely a Must See - Review of Amsterdam Canal Ring, Amsterdam, The Netherlands - Tripadvisor
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