| GMD | Rare map |
| Language | Chinese |
| Classification | F7823 K8 s100 W8 S34 1927 |
| Publisher | 廣東省陸地測量局, 1927 |
| Subject | Maps -- Guangdong Sheng (China)Old map -- ChinaRepublic of China (1912 - 1949)Heyuan 河源縣 (Guangdong Sheng, China)Boluo 博羅縣 (Guangdong Sheng, China)Zijin 紫金縣 (Guangdong Sheng, China) |
| Description | 1 map: b&w.; 60x39cm. folded in envelope 23x29 cm. |