Apple Of The Sun - The Argument For The Universal Gravitational 'Constant' Not Being Constant Zhenzhi Feng, ¿¿¿ & ¿¿ Chen Feng 9781647845698 | Chinees | Paperback | 2018 Voorraad status ophalen... € 14,50
Structural Analysis Of The New Formulae On Gravity And Repulsion Zhenzhi Feng, ¿¿¿ & Chen Feng 9781647840082 | Chinees | Paperback | 2018 Voorraad status ophalen... € 19,40
The principle of planetary revolution and rotation Dongfeng , Liu & Yingtao , Liu 9781683722168 | Chinees | Paperback | 2019 Voorraad status ophalen... € 17,70