00732cam a2200193 4500 1269506856 TxAuBib 20240510120000.0 240509s2024||||||||||||||||||||||||eng|u 73581 Project Gutenberg PGUSA eng TxAuBib Aldrich, Eva. The blackboard clock [Gutenberg] : b device desk book for the primary teacher, for teaching pupils in first year and kindergarten grades how to tell time of day by the clock, and time drill / Eva Aldrich. Project Gutenberg, 2024. Project Gutenberg ; 73581 Public domain in the USA. Text. Project Gutenberg ; 73581. http://www.gutenberg.org/ebooks/73581